Appendix A: Functions and Instructions

Absolute value. For a real number, expression, list or matrix it returns the distance from zero (element by element for lists and matrices). For a complex number or list of complex numbers it returns the magnitude (modulus).

• abs(⁻5) → 5
• abs(3+4i) → 5

Logical AND. Gives 1 when both values are nonzero (true) and 0 otherwise. The values can be numbers, expressions or lists; with lists the test is done element by element.

• 1 and 0 → 0
• (2>1) and (3>2) → 1

Returns the polar angle (argument) of a complex number or of every element of a list of complex numbers. The result is in the current angle mode (Radian or Degree).

One-way analysis of variance: compares the means of two to 20 populations, each given as a list. The results (F, p, factor and error statistics, pooled standard deviation) are shown on a results screen and stored in the statistics variables.

Holds the most recent answer. Use it in a new expression to carry the previous result forward. Pressing an operator key such as + at the start of a new line pastes Ans for you.

Moves one or more variables from RAM into the user data archive, freeing RAM. Archived variables are kept safely but must be unarchived before you can change them.

Runs an assembly-language program. Assembly programs cannot be run in this emulator: the command is accepted but gives an ERR:INVALID.

Compiles an assembly program written as ASCII text (prgmASM1) and stores the compiled hex version as prgmASM2. Not functional in this emulator.

Must be the first line of an assembly-language program source. Not functional in this emulator.

Joins two things end to end. For matrices, matrixB is appended to matrixA as extra columns (the row counts must match). For lists, listB is tacked onto the end of listA to form one longer list.

• augment({1,2},{3}) → {1 2 3}

Answers setting in the MODE screen. With AUTO, answers are displayed in a form similar to the input: fractions in give fractions out, decimals in give decimals out. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Hides the graph axes. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Shows the graph axes. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Sets rectangular complex-number mode, where complex results are displayed as real part plus imaginary part times i. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Finance function: the remaining loan balance after payment number npmt of an amortization schedule. It uses the stored TVM values for PV, I% and PMT, and rounds to roundvalue decimal places if given.

Cumulative binomial probability: the chance of at most x successes in numtrials independent trials, each with success probability p. If you leave out x, it returns the whole list of cumulative probabilities for 0 up to numtrials successes. x can be a list. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Binomial probability: the chance of exactly x successes in numtrials independent trials, each with success probability p. Without x it returns the list of probabilities for 0 up to numtrials successes. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Returns the number of seconds elapsed since the timer was started with startTmr. starttime is the value that startTmr returned.

Chi-square cumulative probability between lowerbound and upperbound for df degrees of freedom. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Chi-square probability density at x for df degrees of freedom. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Chi-square test on a table of counts. The observed matrix holds your data; the expected matrix is filled in with the expected counts. drawflag=1 draws the result, drawflag=0 just calculates it. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Goodness-of-fit test: checks whether sample counts (observedlist) are consistent with a specified distribution (expectedlist) with df degrees of freedom. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Draws a circle on the graph with center (X,Y) and the given radius. Use ZSquare first if you want it to look round.

Display setting in the MODE screen. Entries and answers are shown on a single line in the older style, such as 1/2+3/4, instead of stacked MathPrint fractions. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Empties the Last Entry storage area, so 2ndENTRY no longer recalls earlier lines.

Turns off the clock display on the MODE screen.

Turns on the clock display on the MODE screen.

Sets the dimension of every list in memory to 0, emptying them all. The lists themselves still exist.

Erases everything drawn on the graph with the DRAW tools (lines, circles, shading, text, pen strokes, plotted points). Plotted functions and stat plots are not affected; they redraw with the graph.

Clears the home screen. Typically used at the start of a program. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Sets the dimension of each named list to 0, emptying it.

Clears all the values from the table. It only has a visible effect when the table is set to Indpnt: Ask. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Complex conjugate of a complex number or of every element of a list: the same real part with the sign of the imaginary part flipped.

Selects connected plotting mode (points joined by line segments) and resets every graph style in the Y= editor to the plain line style. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Turns off display of the cursor coordinates when you trace or move the free-moving cursor. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Turns on display of the cursor coordinates when you trace or move the free-moving cursor. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Cosine of a real number, expression or list, using the current angle mode (Radian or Degree).

Inverse cosine (arccosine) of a real number, expression or list. The answer is an angle in the current angle mode. Values must be between ⁻1 and 1 for real results.

Hyperbolic cosine of a real number, expression or list.

Inverse hyperbolic cosine of a real number, expression or list.

Cubic regression: fits y=ax³+bx²+cx+d to the data in Xlistname and Ylistname (optionally weighted by freqlist) and can store the equation in the Y= variable regequ. All arguments are optional; the default lists are L₁ and L₂. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Running totals. For a list it returns a list in which each element is the sum of all elements up to that position. For a matrix it does the same down each column from top to bottom.

• cumSum({1,2,3}) → {1 3 6}

Tells you the day of the week for a date. Returns 1 for Sunday through 7 for Saturday. The year must have four digits; month and day can have one or two.

• dayOfWk(2026,10,12) → 2 (Monday)

Number of days between two dates, counting actual calendar days. Enter dates as numbers in MM.DDYY or DDMM.YY form according to the date format; supported years run from 1950 to 2049.

Answers setting in the MODE screen. With DEC, answers are shown as integers or decimal numbers, never as fractions. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Displays a real or complex number, expression, list or matrix in decimal form. Handy for turning a fraction answer into a decimal.

• 1/4►Dec → .25

Sets degree angle mode, so angles are entered and displayed in degrees. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Deletes the contents of a variable from memory. Often used in programs to tidy up temporary variables. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Table setup: the table asks you to enter each value of the dependent variable (Y) instead of computing it. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Table setup: dependent-variable values are filled in automatically from the Y= functions. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Determinant of a square matrix.

Turns diagnostics off: regression results no longer show r, r² and R².

Turns diagnostics on: regression results also show r, r² and R².

Dimension. With a list or matrix name it returns the size: the length of a list, or a two-element list {rows,columns} for a matrix. Used on the right of STO► (length→dim(listname) or {rows,columns}→dim(matrixname)) it creates a list or matrix of that size, or resizes an existing one.

• dim({4,5,6}) → 3
• 5→dim(L₁) makes L₁ a list of five zeros

In a program, Disp with no arguments shows the home screen; with arguments it displays each value on the home screen, one per line. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Displays the graph. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Displays the table. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Displays a value as degrees, minutes and seconds. The calculator must be in Degree mode for the conversion to be meaningful.

Selects dot plotting mode (points not joined) and resets every graph style in the Y= editor to the dot style. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Draws the graph of an expression in terms of X on top of the current graph. The expression is drawn, not saved as a Y= function.

Draws the inverse of an expression by plotting its X values on the y-axis and its Y values on the x-axis.

Decrement and skip. Subtracts 1 from the variable, and if the result is less than value it skips the next command (commandA). Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

The constant e (about 2.71828), the base of natural logarithms.

Raises e to a power. Given a list, it returns a list of e raised to each element.

Scientific-notation exponent (EE). Multiplies a number, or every element of a list or matrix, by 10 to the given exponent: 2ᴇ3 is 2000.

Finance function: converts a nominal interest rate to the effective rate for the given number of compounding periods per year.

Part of the If-Then-Else structure. The commands between Then and Else run when the condition is true (1); the commands from Else to End run when it is false (0). See also If and Then. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Marks the end of a For(, If-Then-Else, Repeat or While block. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Selects engineering display mode: numbers are shown in scientific form, but with the exponent always a multiple of 3. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Converts the equation stored in a Y= variable to text and stores it in the string Strn.

Turns a string into an expression and evaluates it, as if you had typed its contents.

Exponential regression: fits y=a·bˣ to the data in Xlistname and Ylistname (optionally weighted by freqlist) and can store the equation in the Y= variable regequ. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Hides the function expression shown while tracing. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Shows the function expression while tracing. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

F-distribution cumulative probability between lowerbound and upperbound for the given numerator and denominator degrees of freedom. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Converts an answer between fraction and decimal form: a fraction becomes a decimal, and a decimal becomes a fraction when one exists.

Stores value in every element of an existing matrix or list.

Selects fixed-decimal display mode with # decimal places (0 to 9). In the MODE screen you pick the number from the row of digits. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Selects floating-decimal display mode, where the number of decimal places varies as needed. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Returns the value of the variable at which the expression has its local maximum between lower and upper, found to within tolerance (default 1ᴇ⁻5).

Returns the value of the variable at which the expression has its local minimum between lower and upper, found to within tolerance (default 1ᴇ⁻5).

Numerical definite integral of the expression with respect to the variable between lower and upper, calculated to within tolerance (default 1ᴇ⁻5).

Deselects all Y= functions, or only the numbered ones you list, so they are not graphed.

Selects all Y= functions, or only the numbered ones you list, so they are graphed.

Loop. Runs the commands up to End repeatedly, starting with the variable at begin and adding increment (default 1) each time, until the variable exceeds end. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Fractional part of a real or complex number, expression, list or matrix (for example fPart(3.25) gives .25).

F-distribution probability density at x for the given numerator and denominator degrees of freedom. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Answers setting in the MODE screen. With FRAC, answers are displayed as fractions whenever possible. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Displays a real or complex number, expression, list or matrix as a fraction reduced to lowest terms.

• .75►Frac → 3/4

Selects full-screen mode (no split screen). Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Selects function graphing mode. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Opens the garbage-collection prompt, which tidies the archive so unused space can be reclaimed.

Greatest common divisor of two integers (or of two lists, element by element).

• gcd(12,18) → 6

Cumulative geometric probability: the chance that the first success happens on or before trial x, when each trial succeeds with probability p. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Geometric probability: the chance that the first success happens exactly on trial x, when each trial succeeds with probability p. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Reads data from a CBL 2 or CBR system and stores it in the variable. Needs the hardware link, so it is not usable in this emulator. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Gets the contents of a variable from another TI-84 Plus and stores it in the variable on the receiving calculator. portflag=0 uses the USB port if connected, 1 uses USB, 2 uses the I/O port. There is no link in this emulator, so it cannot be used here. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Returns the date from the clock as a list {year,month,day}.

Returns an integer for the current date format: 1 = M/D/Y, 2 = D/M/Y, 3 = Y/M/D.

Returns the current date as text in the format chosen by the integer: 1 = M/D/Y, 2 = D/M/Y, 3 = Y/M/D.

Returns the time from the clock as a list {hour,minute,second}, in 24-hour form.

Returns the current clock time format: 12 for 12-hour or 24 for 24-hour.

Returns the current time as text, in 12-hour format if integer is 12 or 24-hour format if integer is 24.

Returns the code of the key currently held down, or 0 if no key is pressed. Used in programs to react to the keyboard. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Jumps to the matching Lbl in a program. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Sets the graph style of Y= function number function# in a program. The style number is 1 line, 2 thick, 3 shade above, 4 shade below, 5 path, 6 animate, 7 dot. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Turns off the grid on the graph. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Turns on the grid on the graph. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Selects graph-table split-screen mode (graph on the left, table on the right). Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Selects horizontal split-screen mode (graph on top, home screen below). Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Draws a horizontal line at y on the graph.

The imaginary unit, the square root of ⁻1, used to enter complex numbers.

Returns the identity matrix with the given number of rows and columns.

Single-command conditional. If the condition is true (nonzero), commandA runs; if it is false (0), commandA is skipped. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Conditional block. If the condition is true (1), the commands between Then and End run; otherwise they are skipped. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Imaginary (nonreal) part of a complex number or of every element of a list of complex numbers.

Table setup: the table asks you to enter each value of the independent variable (X). Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Table setup: independent-variable values are generated automatically from TblStart and ΔTbl. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Gets input in a program. With no arguments it displays the graph and lets you move the cursor to pick a point, storing its coordinates in X and Y. With a variable it prompts with ? and stores what you enter; with text or a string it shows that prompt first. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Returns the position in string where substring first appears, starting the search at position start (default 1). Returns 0 if it is not found.

Greatest integer less than or equal to a real or complex number, expression, list or matrix (so int(⁻2.5) is ⁻3).

Finance function: total interest paid between payment pmt1 and payment pmt2 of an amortization schedule, rounded to roundvalue decimal places if given.

Inverse of the cumulative normal distribution: returns the x value whose left-tail area equals the given area, for the normal curve with mean μ and standard deviation σ (default 0 and 1). With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Inverse of the cumulative Student-t distribution: returns the t value whose left-tail area equals the given area, for df degrees of freedom. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Integer part of a real or complex number, expression, list or matrix (the digits before the decimal point, so iPart(⁻2.5) is ⁻2).

Finance function: internal rate of return, the interest rate at which the net present value of the cash flows is zero. CF0 is the initial cash flow, CFList the later ones, and CFFreq how often each repeats.

Returns 1 if the clock is on and 0 if it is off.

Increment and skip. Adds 1 to the variable, and if the result is greater than value it skips the next command (commandA). Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

The small-L list prefix. It marks the next one to five characters as the name of a user-created list, for example ʟSCORES.

Hides the axis labels (X and Y) on the graph. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Shows the axis labels (X and Y) on the graph. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Creates a label of one or two characters, which Goto can jump to. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Least common multiple of two integers (or of two lists, element by element).

• lcm(4,6) → 12

Number of characters in a string.

Draws a line segment from (X1,Y1) to (X2,Y2) on the graph. Adding a final argument of 0 erases such a line instead.

Linear regression written as y=a+bx: fits a straight line to Xlistname and Ylistname (optionally weighted by freqlist) and can store the equation in the Y= variable regequ. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Linear regression written as y=ax+b: fits a straight line to Xlistname and Ylistname (optionally weighted by freqlist) and can store the equation in the Y= variable regequ. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Performs a linear regression and computes a t confidence interval for the slope. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Performs a linear regression and a t-test on the slope. alternative=⁻1 tests for a slope less than 0, 0 for not equal to 0, and 1 for greater than 0. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Returns a list of the differences between consecutive elements of the list (each element minus the one before it). The result is one element shorter.

• ΔList({1,4,9}) → {3 5}

Fills a matrix column by column: each listed list becomes one column.

Natural logarithm (base e) of a real or complex number, expression or list.

Logarithmic regression: fits y=a+b·ln(x) to the data and can store the equation in the Y= variable regequ. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Common logarithm (base 10) of a real or complex number, expression or list.

Logarithm of value to any base you specify.

• logBASE(8,2) → 3

Logistic regression: fits y=c/(1+a·e^(⁻bx)) to the data and can store the equation in the Y= variable regequ. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Lets you fit a linear equation to a scatter plot by hand, adjusting a line on the graph. The equation is stored in equname. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Display setting in the MODE screen. Most entries and answers appear the way they do in a textbook, with stacked fractions and exponents in raised position. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Copies matrix columns into lists. In the first form every column goes to the named lists in order; in the second form only the chosen column# is copied to listname.

Maximum. With two values it returns the larger. With one list it returns the largest element. With two lists, or a value and a list, it returns a list of the larger of each pair.

• max(3,8) → 8

Mean (average) of the list, weighted by the optional frequency list.

Median of the list, weighted by the optional frequency list.

Median-median line: fits a line that is resistant to outliers to the data and can store the equation in the Y= variable regequ. With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

In a program, shows a menu of up to seven items. The user's choice jumps to the matching label. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Minimum. With two values it returns the smaller. With one list it returns the smallest element. With two lists, or a value and a list, it returns a list of the smaller of each pair.

• min(3,8) → 3

Number of combinations: how many ways to choose valueB items from valueA, ignoring order. With lists it works element by element.

• 5 nCr 2 → 10

Shows an answer as a simple fraction (improper fractions are not converted to mixed numbers). In MathPrint it also pastes a stacked-fraction template.

Approximate numerical derivative of the expression with respect to the variable at the given value, using step size H (default 0.001).

Converts a fraction answer to a mixed number, or a mixed number to a fraction, when that is possible.

Finance function: converts an effective interest rate to the nominal rate for the given number of compounding periods per year.

Selects normal display mode (standard numeric notation). Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Normal-distribution probability that a value lies between lowerbound and upperbound, for mean μ and standard deviation σ (default 0 and 1). With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

• normalcdf(⁻1,1) → .6826894921

Normal-distribution probability density at x, for mean μ and standard deviation σ (default 0 and 1). With STAT WIZARDS on (the default), this opens an input form that pastes the finished command.

Logical NOT. Returns 0 if value is nonzero (true) and 1 if it is 0 (false). Works on numbers, expressions and lists.

Number of permutations: how many ordered arrangements of valueB items can be taken from valueA. With lists it works element by element.

• 5 nPr 2 → 20

Finance function: net present value, the sum of the present values of a series of cash inflows and outflows.

Logical OR. Returns 1 if either value is nonzero (true), and 0 only if both are 0. Works on numbers, expressions and lists.

In a program, displays text or a value on the home screen starting at the given row (1 to 8) and column (1 to 16). Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Selects parametric graphing mode. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

In a program, stops until you press ENTER. With a value it displays that value while paused. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Defines stat plot 1, 2 or 3 in a program. The arguments depend on the type: Scatter or xyLine take an X list, a Y list and a mark; Histogram or Boxplot take an X list and a frequency list; ModBoxplot adds a mark; NormProbPlot takes a data list, a data axis (X or Y) and a mark. In the paste menu the entries are Plot1(, Plot2( and Plot3(. Marked † in the guide: this is a program instruction. The menu route above only pastes it in the program editor; on the home screen paste it from the CATALOG.

Turns stat plots off. With no argument all three plots are switched off; with one or more plot numbers (1, 2 or 3) only those plots are turned off.

• PlotsOff turns off every stat plot
• PlotsOff 1,3 turns off Plot1 and Plot3

Turns stat plots on. With no argument all three plots are switched on; with plot numbers (1, 2 or 3) only those plots are turned on.

• PlotsOn 2 turns on Plot2 only

Chooses an annuity due for the finance functions: payments are made at the beginning of each payment period.

Chooses an ordinary annuity for the finance functions: payments are made at the end of each payment period.

Cumulative Poisson probability: the chance of getting x or fewer events when the average number of events is μ. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Poisson probability of exactly x events when the average number of events is μ. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Selects polar graphing mode (the Pol setting on the MODE screen), so Y= holds r= equations. Program-editor only (†): on the home screen MODE just changes the setting, it does not paste a command.

Display instruction: shows a complex number in polar form (magnitude and angle). It only changes how the result is shown; it must be the last thing in the expression.

• 3+4i►Polar gives 5e^(.927295218i) (a+bi mode, radians)

Switches the graph coordinate display to polar form, so the cursor and TRACE show r and θ instead of X and Y. Program-editor only: on the home screen use the FORMAT screen. Menu: 2ndFORMAT (FORMAT), PolarGC.

Runs the stored program called name. Used as a command line in another program (to call it as a subroutine) or on the home screen to run a program. This entry is program-editor only: from the home screen the key sequence does not paste it. On the home screen, pick the program from the PRGM EXEC list.

Finance: adds up the principal portion of the payments numbered pmt1 through pmt2 of an amortization schedule, rounded to roundvalue decimals if given.

Multiplies together the elements of a list, optionally only the elements from position start to position end.

• prod({1,2,3,4}) → 24

In a program, asks the user for a value for each listed variable in turn and stores each answer. This entry is program-editor only: from the home screen the key sequence does not paste it.

Confidence interval for one proportion (z interval), from x successes in n trials. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Confidence interval for the difference between two proportions (z interval). In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

One-proportion z test of the claim p = p0. alternative is ⁻1 for <, 0 for ≠ and 1 for >. drawflag is 1 to draw the result graph or 0 to just compute the numbers. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Two-proportion z test comparing p1 and p2. alternative is ⁻1 for <, 0 for ≠ and 1 for >; drawflag is 1 to draw or 0 to calculate only. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Toggles the graph point at (x,y): if it is on it is erased, if it is off it is drawn.

Erases the point at (x,y) on the graph. The optional mark (1 = dot, 2 = box, 3 = cross) says which point shape to erase.

Draws a point at (x,y) on the graph. The optional mark (1 = dot, 2 = box, 3 = cross) chooses the point shape.

Fits a power-law model y = a·x^b to the data and stores the fitted equation in regequ if you name one. All arguments are optional (the defaults are L1, L2 and no frequency list). With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Toggles one screen pixel. The row is 0 to 62 and the column is 0 to 94.

Turns one pixel off. The row is 0 to 62 and the column is 0 to 94.

Turns one pixel on. The row is 0 to 62 and the column is 0 to 94.

Reports whether a pixel is lit: 1 if it is on, 0 if it is off. The row is 0 to 62 and the column is 0 to 94.

Converts polar coordinates (r,θ) to the rectangular X coordinate. r and θ can also be lists.

• P►Rx(2,π/3) → 1 (radian mode)

Converts polar coordinates (r,θ) to the rectangular Y coordinate. r and θ can also be lists.

Fits a quadratic model y = ax² + bx + c to the data. freqlist gives how many times each point occurs, and regequ (for example Y₁) receives the fitted equation. All arguments are optional. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Fits a quartic model y = ax⁴ + bx³ + cx² + dx + e to the data and optionally stores the equation in regequ. All arguments are optional. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Selects radian angle mode (angles are measured in radians). Program-editor only (†): on the home screen MODE just changes the setting, it does not paste a command.

Returns a random number between 0 and 1. Give numtrials to get a list of that many random numbers.

• rand → a number such as .4163052738
• rand(3) → a list of three random numbers

Random draw from a binomial distribution: the number of successes in numtrials tries, each succeeding with probability prob. Give numsimulations to get a list of that many draws.

Returns a random whole number from lower to upper inclusive. With numtrials it returns a list of that many random integers.

• randInt(1,6) simulates one die roll
• randInt(1,6,10) simulates ten rolls

Returns all the integers from lowerint to upperint, each exactly once, in random order (a random permutation, like shuffling a deck).

Returns a matrix of the given size (each between 1 and 99) filled with random integers from ⁻9 to 9.

Random draw from a normal distribution with mean μ and standard deviation σ. With numtrials it returns a list of that many draws.

Selects polar complex mode: complex results are shown as magnitude and angle (r e^(θi)). Program-editor only (†): on the home screen MODE just changes the setting, it does not paste a command.

Selects real-number mode: complex results appear only if you enter complex numbers yourself; otherwise operations such as √(⁻4) give an error. Program-editor only (†): on the home screen MODE just changes the setting, it does not paste a command.

Returns the real part of a complex number, or of every element of a list of complex numbers.

• real(3+4i) → 3

Restores all graph settings (functions, window, format, …) saved in graph database GDBn (n = 1 to 9, or 0).

Displays the current graph and overlays the picture stored in Picn (n = 1 to 9, or 0).

Display instruction: shows a complex number or list of complex numbers in rectangular form (a+bi). It must be the last thing in the expression.

Switches the graph coordinate display to rectangular form (X and Y). Program-editor only; on the home screen use the FORMAT screen.

Returns the row-echelon form of a matrix (Gaussian elimination without the final back-substitution).

Returns what is left over when one whole number is divided by another; the divisor must not be 0. Either argument can be a list, in which case the result is a list.

• remainder(17,5) → 2

Program loop: runs the commands between Repeat and End over and over until condition becomes true. The condition is tested after each pass, so the loop always runs at least once. This entry is program-editor only: from the home screen the key sequence does not paste it.

Ends the current program and returns control to the program that called it (or to the home screen). This entry is program-editor only: from the home screen the key sequence does not paste it.

Rounds a number, expression, list or matrix to #decimals decimal places (0 to 9). Without #decimals the value is rounded to 10 digits.

• round(π,3) → 3.142

Row operation: multiplies the given row of the matrix by value and returns the new matrix. The original matrix is unchanged.

Row operation: adds rowA of the matrix to rowB, stores the sum in rowB and returns the new matrix.

Row operation: multiplies rowA by value, adds the result to rowB, stores it in rowB and returns the new matrix.

Returns a copy of the matrix with rowA and rowB exchanged.

Returns the reduced row-echelon form of a matrix, the form you use to read off the solution of a linear system.

Converts rectangular coordinates (x,y) to the polar radius r. x and y can also be lists.

• R►Pr(3,4) → 5

Converts rectangular coordinates (x,y) to the polar angle θ, in the current angle mode. x and y can also be lists.

Two-sample F test comparing the standard deviations of two populations. The first form takes data lists, the second takes summary statistics. alternative is ⁻1 for <, 0 for ≠ and 1 for >; drawflag is 1 to draw the result graph or 0 to calculate only. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Confidence interval for the difference of two means (t interval), from data lists or from summary statistics. pooled is 1 to pool the variances or 0 not to. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Two-sample t test comparing two means. The first form uses data lists, the second uses summary statistics. alternative is ⁻1 for <, 0 for ≠ and 1 for >. pooled is 1 to pool the variances or 0 not to. drawflag is 1 to draw or 0 to calculate only. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Confidence interval for the difference of two means when both population standard deviations σ1 and σ2 are known. Takes data lists or summary statistics. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Two-sample z test comparing two means when the population standard deviations σ1 and σ2 are known. alternative is ⁻1 for <, 0 for ≠ and 1 for >; drawflag is 1 to draw or 0 to calculate only. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Selects scientific notation for displaying numbers (one digit before the decimal point, times a power of ten). Program-editor only (†): on the home screen MODE just changes the setting, it does not paste a command.

After you draw a scatter or xyLine stat plot and TRACE on it, this lets you choose a range of its points, and copies the chosen points into two new lists, Xlistname and Ylistname. It only works with those two plot types.

Sends the contents of a variable to a CBL 2 or CBR data-collection device. There is no such device in the emulator, so the command has nothing to talk to. This entry is program-editor only: from the home screen the key sequence does not paste it.

Builds a list by evaluating expression for every value of variable from begin to end, stepping by increment (1 if omitted). With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

• seq(X²,X,1,5) → {1 4 9 16 25}

Selects sequence graphing mode (the Seq setting on the MODE screen), so Y= holds u, v and w sequence definitions. Program-editor only (†): on the home screen MODE just changes the setting, it does not paste a command.

Graphs functions one after another: each is finished before the next begins. Program-editor only (†): on the home screen MODE just changes the setting, it does not paste a command.

Sets the calculator date. The year must have four digits; month and day can be one or two digits.

• setDate(2025,3,9)

Sets how dates are displayed: 1 = M/D/Y, 2 = D/M/Y, 3 = Y/M/D.

Sets the clock. The hour uses the 24-hour clock, so 13 means 1 p.m.

Sets how the time is displayed: 12 = 12-hour clock, 24 = 24-hour clock.

Rebuilds the stat list editor. With no argument it restores the standard columns L1 through L6. With list names it clears the editor and shows exactly those lists (up to 20), in that order, starting in column 1.

Draws two functions of X on the current graph and shades the region between them (between Xleft and Xright if you give them). pattern (1 to 4) picks vertical, horizontal, negative-slope or positive-slope shading, and patres (1 to 8) sets how dense the lines are.

Draws the χ² density curve with df degrees of freedom and shades the area between lowerbound and upperbound. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Draws the F density curve for the given numerator and denominator degrees of freedom and shades the area between lowerbound and upperbound. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Draws the normal density curve (mean μ, standard deviation σ; the standard normal 0 and 1 if omitted) and shades the area between lowerbound and upperbound. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Draws the Student-t density curve with df degrees of freedom and shades the area between lowerbound and upperbound. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Graphs all selected functions at the same time, a little of each in turn. Program-editor only (†): on the home screen MODE just changes the setting, it does not paste a command.

Sine of a real number, expression or list, in the current angle mode (radians or degrees).

• sin(π/2) → 1 (radian mode)

Inverse sine (arcsine) of a real number, expression or list, returned as an angle in the current angle mode. The value must be between ⁻1 and 1 (for real results).

Hyperbolic sine of a real number, expression or list.

Inverse hyperbolic sine of a real number, expression or list.

Fits a sinusoidal model y = a·sin(bx + c) + d to the data, trying up to iterations times (1 to 16, default 3) starting from your guess of the period. The fitted equation is stored in regequ if given. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Finds a value of variable that makes the expression equal to 0, starting from guess and searching only between lower and upper. Used in programs and the interactive Solver; the bounds are optional. This entry is program-editor only: from the home screen the key sequence does not paste it.

Sorts a list in ascending order, in place. In the second form the key list is sorted and every dependent list is rearranged the same way, which keeps paired data together.

Sorts a list in descending order, in place. In the second form the key list is sorted and every dependent list is rearranged to match it.

Starts the clock timer and returns its starting value. Store that value, then later pass it to checkTmr( to find out how many seconds have passed.

Turns off the wizard screens that prompt for the arguments of statistical commands, distributions and seq(; those items then paste a plain command name instead.

Turns on the wizard screens that prompt for the arguments of statistical commands, distributions and seq(.

Sample standard deviation of the elements of a list, with each element counted freqlist times if a frequency list is given.

Ends the running program immediately and returns to the home screen. This entry is program-editor only: from the home screen the key sequence does not paste it.

Saves the current graph settings (functions, window, format) into graph database GDBn so RecallGDB can restore them later.

Saves the current graph screen as picture Picn so RecallPic can display it again.

Turns the text in a string into an equation and stores it in a Y= variable such as Y₁.

• String►Equ("X²",Y₁) stores X² in Y₁

Returns part of a string: length characters starting at character number begin.

• sub("HELLO",2,3) → "ELL"

Adds up the elements of a list, optionally only those from position start to position end.

• sum({1,2,3}) → 6

In MathPrint mode this draws the summation template and adds up the expression over the index range start to end (start must not exceed end). In Classic mode it is entered as summation( with the same arguments.

Tangent of a real number, expression or list, in the current angle mode.

Inverse tangent (arctangent) of a real number, expression or list, returned as an angle in the current angle mode.

Draws the line tangent to the expression (a function of X) at X = value on the current graph.

Hyperbolic tangent of a real number, expression or list.

Inverse hyperbolic tangent of a real number, expression or list.

Student-t probability between lowerbound and upperbound for df degrees of freedom (the area under the t curve between the two values). With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Writes text (and the values of expressions) on the graph screen starting at pixel (row,column). The row is 0 to 57 and the column is 0 to 94. Each argument is a quoted string or an expression.

Marks the block of commands that an If runs when its condition is true. It is always used together with If (and optionally Else) and finished by End. This entry is program-editor only: from the home screen the key sequence does not paste it.

Makes sequence graphs plot against time: n on the horizontal axis and the sequence values u(n), v(n), w(n) on the vertical axis. Program-editor only; on the home screen use the FORMAT screen.

Converts a number of seconds into a list of days, hours, minutes and seconds, {days,hours,minutes,seconds}.

• timeCnv(3700) → {0 1 1 40}

Confidence interval for a mean when the population standard deviation is unknown (t interval). The first form uses a data list, the second uses summary statistics. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Height of the Student-t density curve at x for df degrees of freedom. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

In a program: shows the graph and starts TRACE. Interactively, just press TRACE on a graph. This entry is program-editor only: from the home screen the key sequence does not paste it.

One-sample t test of the claim μ = μ0. The first form uses a data list (with optional frequencies), the second uses summary statistics. alternative is ⁻1 for <, 0 for ≠ and 1 for >; drawflag is 1 to draw the result graph or 0 to calculate only. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Finance: computes the future value. Without arguments it uses the current TVM Solver values.

Finance: computes the annual interest rate. Without arguments it uses the current TVM Solver values.

Finance: computes the number of payment periods. Without arguments it uses the current TVM Solver values.

Finance: computes the amount of each payment. Without arguments it uses the current TVM Solver values.

Finance: computes the present value. Without arguments it uses the current TVM Solver values.

Moves variables from archive memory back to RAM so they can be edited again. (Use Archive to do the opposite.)

Template used for entering a mixed number (whole part and fraction), such as 1 3/4.

Sequence-graph axes: plots u(n) on the horizontal axis and v(n) on the vertical axis. Program-editor only; on the home screen choose it on the FORMAT screen.

Sequence-graph axes: plots u(n) on the horizontal axis and w(n) on the vertical axis. Program-editor only; on the home screen choose it on the FORMAT screen.

One-variable statistics: mean, sums, standard deviations, quartiles, min and max of the data in Xlistname (default L1), with optional frequencies. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Two-variable statistics for paired data in Xlistname and Ylistname (defaults L1 and L2), with optional frequencies: means, sums, standard deviations and the sums of products. With STAT WIZARDS on (the default), choosing it from the menu opens a prompt screen that asks for each argument and then pastes the finished command; with the wizards off it just pastes the name.

Sample variance of the elements of a list, with each element counted freqlist times if a frequency list is given.

Draws a vertical line at X = x on the graph.

Sequence-graph axes: plots v(n) on the horizontal axis and w(n) on the vertical axis. Program-editor only; on the home screen choose it on the FORMAT screen.

Makes sequence graphs trace as webs (cobweb diagrams). Program-editor only; on the home screen choose it on the FORMAT screen.

Program loop: repeats the commands between While and End for as long as condition is true. The condition is tested before each pass, so the commands may never run. This entry is program-editor only: from the home screen the key sequence does not paste it.

Exclusive or: returns 1 when exactly one of the two values is non-zero, otherwise 0. The values can be real numbers, expressions or lists.

• 1 xor 0 → 1
• 1 xor 1 → 0

Shows the graph and lets you drag a rectangle with the cursor; the rectangle becomes the new viewing window. This entry is program-editor only: from the home screen the key sequence does not paste it.

Sets the window so ΔX and ΔY are both 0.1 and the origin is at the center of the screen, then graphs. This entry is program-editor only: from the home screen the key sequence does not paste it.

Sets the window variables so ΔX and ΔY are 1/2, letting TRACE step in halves (when possible), then graphs. From the home screen the menu item runs it immediately.

Sets the window variables so ΔX and ΔY are 1/3, letting TRACE step in thirds (when possible), then graphs. From the home screen the menu item runs it immediately.

Sets the window variables so ΔX and ΔY are 1/4, letting TRACE step in quarters (when possible), then graphs. From the home screen the menu item runs it immediately.

Sets the window variables so ΔX and ΔY are 1/5, letting TRACE step in fifths (when possible), then graphs. From the home screen the menu item runs it immediately.

Sets the window variables so ΔX and ΔY are 1/8, letting TRACE step in eighths (when possible), then graphs. From the home screen the menu item runs it immediately.

Sets the window variables so ΔX and ΔY are 1/10, letting TRACE step in tenths (when possible), then graphs. From the home screen the menu item runs it immediately.

Sets the window to ΔX = 1, ΔY = 1, Xscl = 10, Yscl = 10 with the origin at the center, so the cursor moves in whole numbers. This entry is program-editor only: from the home screen the key sequence does not paste it.

Confidence interval for a mean when the population standard deviation σ is known (z interval). The first form uses a data list, the second uses summary statistics. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Magnifies the graph around the cursor position, using the ZOOM FACTORS (XFact, YFact). This entry is program-editor only: from the home screen the key sequence does not paste it.

Shows a larger part of the graph centered on the cursor position, using the ZOOM FACTORS (XFact, YFact). This entry is program-editor only: from the home screen the key sequence does not paste it.

Recomputes Ymin and Ymax so the selected functions fit between Xmin and Xmax, then replots them. This entry is program-editor only: from the home screen the key sequence does not paste it.

Graphs the selected functions using the window you previously saved with ZoomSto. This entry is program-editor only: from the home screen the key sequence does not paste it.

Sets the window so that all the statistical data points in the enabled stat plots are visible. This entry is program-editor only: from the home screen the key sequence does not paste it.

Immediately saves the current window settings so ZoomRcl can restore them later. This entry is program-editor only: from the home screen the key sequence does not paste it.

Replots the graph using the window from before the last ZOOM command. This entry is program-editor only: from the home screen the key sequence does not paste it.

Shows only quadrant 1 of the coordinate plane (X and Y both positive). From the home screen the menu item runs it immediately.

Adjusts the X or Y window so one pixel is the same width and height in graph units (circles look round), then graphs. This entry is program-editor only: from the home screen the key sequence does not paste it.

Resets the window to the standard values (⁻10 to 10 on both axes) and graphs the functions immediately. This entry is program-editor only: from the home screen the key sequence does not paste it.

One-sample z test of the claim μ = μ0 when the population standard deviation σ is known. The first form uses a data list (with optional frequencies), the second uses summary statistics. alternative is ⁻1 for <, 0 for ≠ and 1 for >; drawflag is 1 to draw or 0 to calculate only. In the program editor you paste it from the STAT TESTS menu and give the arguments inline; on the home screen the same menu item opens an input screen instead.

Sets the window to values suited to trigonometric functions and graphs immediately. This entry is program-editor only: from the home screen the key sequence does not paste it.

Store: puts the value (a number, expression, list, matrix or string) into a variable. The variable can be a letter A–Z or θ, a list, matrix, string, Y= function or other storable name. The stored value is also what the expression returns.

• 5→A stores 5 in A
• {1,2,3}→L₁

Factorial of a whole number (n! = 1×2×…×n, with 0! = 1). Applied to a list it takes the factorial of each element.

• 5! → 120

Degree notation: treats the number as an angle in degrees whatever the angle mode is. It is also the degrees marker in DMS entries such as 10°15'30".

• 90° in radian mode → 1.570796327

Radian notation: treats the number as an angle in radians whatever the angle mode is.

Transpose: returns the matrix with rows and columns exchanged, so element (row,column) of the result is element (column,row) of the original.

The x-th root of a value. In Classic mode you type the root index first, then this symbol, then the number (3ˣ√8). In MathPrint mode the key draws a root template: type the index in the small box, press ▶︎, then type the number. It works with lists too, element by element.

• 3 ˣ√ 8 → 2

Cube: the value multiplied by itself twice. Works on real or complex numbers, expressions, lists and square matrices.

Cube root of a real or complex number, expression or list.

• ³√(27) → 3

Equal: returns 1 if the two values are equal and 0 if not. Works on real or complex numbers, expressions, lists and matrices.

Not equal: returns 1 if the two values differ and 0 if they are equal. Works on real or complex numbers, expressions, lists and matrices.

Less than: returns 1 if valueA is smaller than valueB and 0 otherwise. Works on real numbers, expressions and lists.

Greater than: returns 1 if valueA is larger than valueB and 0 otherwise. Works on real numbers, expressions and lists.

Less than or equal to: returns 1 if valueA is smaller than or equal to valueB, otherwise 0. Works on real numbers, expressions and lists.

Greater than or equal to: returns 1 if valueA is larger than or equal to valueB, otherwise 0. Works on real numbers, expressions and lists.

Reciprocal: 1 divided by a real or complex number, expression or each list element; for a square matrix it gives the inverse matrix.

Square: multiplies a number, expression, each list element, or a square matrix by itself.

Raises a value to a power. Works on real or complex numbers, expressions and lists (element by element) and on square matrices with whole-number powers.

• 2^5 → 32

Negation: changes the sign of a real or complex number, expression, list or matrix. This is the separate key (−), not the subtraction key.

Ten raised to a power; with a list it gives a list of results.

• 10^(2) → 100

Square root of a real or complex number, expression or list.

• √(16) → 4

Multiplication. With lists it is element by element (lists must be the same length); a number times a matrix scales every element; matrix × matrix is the matrix product (columns of the first must match rows of the second).

Division, element by element when lists are involved (lists must be the same length).

Addition, element by element for lists and matrices (they must be the same size). Between two strings it joins them end to end (concatenation).

Subtraction, element by element for lists and matrices (they must be the same size). This is the subtraction key, not the negation key.

Minutes mark in degree-minute-second angle entry: the number before it is minutes.

Seconds mark in degree-minute-second angle entry: the number before it is seconds. It is the quotation mark on the ALPHA" key.