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This Index page contains all of the commands beginning with a letter from A to M. All optional arguments that you can put in commands are enclosed in brackets ([]). For details about a command, click on the link(s) to the tutorial(s) where the command is discussed.

The a+bi (complex) mode displays complex numbers in the form a+b

Discussed In: |
Tutorial 25 |

abs( returns the absolute value of a real number, expression, list, or matrix. To find abs(, press , , and then .

Discussed In: |
Tutorial 30 |

The alpha characters are from A to Z and theta.

Discussed In: |
Tutorial 1 |

Changes the cursor to characters and the following keystrokes will display one of the alpha characters (letters), depending on which button you press.

Ans returns the value of the last answer. When an expression is successfully evaluated, the calculator stores the answer to a storage area called Ans. Ans may be a real or complex number, a list, a matrix, or a string. The main reason for using Ans is to save memory. Accessing Ans is easier for the calculator than accessing a variable. Ans is used just like the user variables, but there is one exemption. You cannot store a variable into Ans by using "," so you can't do something like: "

Discussed In: |
Special Tutorial |

This can be used to ways. In Tutorial 24, we use as a character in text, the apostrophe. As you know apostrophes are used to show possession (Frank's) and to create contractions (don't). This command is supposed to be used as the

Discussed In: |
Tutorial 24 |

augment( returns a list, which is

augment( returns a matrix, which is

[3 4 7 8]]

To find this command, press , and scroll down to

Discussed In: |
Tutorial 27 and Tutorial 28 |

AxesOff turns the graph axes off. You can find this command by pressing and [FORMAT]. Press four times, once, and then press .

Discussed In: |
Tutorial 12 |

AxesOff turns the graph axes off. You can find this command by pressing and [FORMAT]. Press four times, and then press .

Discussed In: |
Tutorial 12 |

Circle( draws a circle with center at (x,y) and a

Discussed In: |
Tutorial 16 |

ClrDraw clears all drawn elements from a graph or drawing. You can find it by pressing , [DRAW], and then .

Discussed In: |
Tutorial 12 |

ClrHome (clear home screen) clears the home screen during program execution. You can find it by pressing and then and you should be in the I/O section. Scroll down to

Discussed In: |
Tutorial 1 |

ClrList sets the dimension of one or more

Discussed In: |
Tutorial 27 |

The colon (:) does two totally different things in a BASIC program. If it's placed as the first line in the program by itself, then it is used so that you can make any of your BASIC programs compatible with AShell, SOS, or TI-Explorer. If it is written in between two commands, it is used so that you can write two different commands on the same line.

Discussed In: |
Tutorial 1 and Tutorial 4 |

The Connected plotting mode draws a line connecting each point calculated for the selected functions. If you have a math program and you want a line when the calculator draws a function, add Connected to the beginning of the program. Most likely, however, most people's calculators will be already set on Connected. To find Connected, press , four times, and .

Discussed In: |
Tutorial 25 |

Dec converts a real or complex number, expression, list, or matrix in fractional form to decimal form. Dec can only be used when displaying the value on the homescreen using Disp. Dec will NOT work with Output( or Text(. To find this command, press and scroll down to 2:Dec.

Discussed In: |
Tutorial 29 |

The Degree mode interprets angle values in trigonometric functions as degrees and displays answers in degrees. You generally would not use this command in programs, unless you were making a program that actually deals with trigonometric functions. You can find Degree by pressing , twice, once, and .

Discussed In: |
Tutorial 25 |

Deletes from memory the contents of the

Discussed In: |
Tutorial 3 |

Returns the dimension of

- Press the button, then the button, and finally the button. Scroll down to
**3:dim**(. - Press the button and then the button. Scroll down to
**3:dim**(.

Discussed In: |
Tutorial 3 |

Disp by itself just displays the home screen. If you follow Disp with a value or text, it displays the value or text.

Discussed In: |
Tutorial 2 |

DispGraph displays the current graph. It works exactly like Disp, but instead displays all the selected functions in the Y= menu instead of displaying text or values. To find DispGraph, press and . Scroll down to

Discussed In: |
Tutorial 25 |

The Dot plotting mode plots only the calculated points of the selected functions; it does not connect the points with a line. To find Dot, press , four times, , and .

Discussed In: |
Tutorial 25 |

DrawF draws

Discussed In: |
Tutorial 18 |

DrawInv draws the inverse of

Discussed In: |
Tutorial 18 |

Discussed In: |
Tutorial 4 |

The End command identifies the end of a group of commands. You must include an End instruction at the end of each of each If-Then group, If-Then-Else group, For(, While, or Repeat command. If you do not put the End command, your program could be stuck in an endless loop. You can find End by pressing the and then scrolling down to

Discussed In: |
Tutorial 4, Tutorial 7, and Tutorial 10 |

A test command that checks to see if

Discussed In: |
Tutorial 4 |

This command can be used in two ways. In Tutorial 24, we use it as an exclamation mark in text. As you already know exclamation marks are used to show interjections among other things. However, in the mathematical sense, the "!" is used as factorial. Factorial multiplies the given number by all the whole numbers less than it, excluding 0. So 6! is 6*5*4*3*2*1, which equals 720. To use the exclamation mark in text, press then . Scroll down to

Discussed In: |
Tutorial 24 |

Fill( replaces each element in

Fill stores

Discussed In: |
Tutorial 27 and Tutorial 28 |

Fix (fixed) decimal mode specifies the number of digits, 0-9, to display to the right of the decimal.

Discussed In: |
Tutorial 25 |

Float (floating) decimal mode displays in the usual way that we display numbers with decimals, with no trailing decimals. The Float mode will display a number like this:

Discussed In: |
Tutorial 25 |

FnOff deselcts all Y= functions or specified Y= functions.

Discussed In: |
Tutorial 12 |

FnOff selcts all Y= functions or specified Y= functions.

Discussed In: |
Tutorial 12 |

For executes everything inside the designated number of times.

Discussed In: |
Tutorial 7 |

fPart( returns the fractional part or parts of real or complex numbers, expressions, lists, and matrices. If the value is negative, the fractional part of the

Discussed In: |
Tutorial 30 |

Frac displays a real or complex number, expression, list, or matrix as a fraction simplified to its simplest terms. If the answer cannot be simplified or the number has more than three decimal places, then the decimal form is displayed. Frac can only be used when displaying the value on the homescreen using Disp. Frac will NOT work with Output( or Text(. To find this command, press and .

Discussed In: |
Tutorial 29 |

The Full screen mode uses the entire screen to display a graph. Once again, most people's calculator are probably set to the Full mode. To find Full press , seven times, and .

Discussed In: |
Tutorial 25 |

The Func (function) graphing mode plots functions, where y is a function of

Discussed In: |
Tutorial 25 |

getKey returns a number corresponding to the last key pressed. If no key has been pressed, getKey returns 0. However, if you use getKey in a loop, it'll wait until a key is pressed. All the keys, except for the key, have their individual key code. Press the key at any time during a program and you can stop the program. To find getKey, press and . Scroll down to

Discussed In: |
Tutorial 21, Tutorial 22, and Tutorial 23 |

Goto causes the program to branch to

Discussed In: |
Tutorial 6 |

A test command that checks to see if

Discussed In: |
Tutorial 4 |

A test command that checks to see if

Discussed In: |
Tutorial 4 |

The G-T (graph-table) split-screen mode displays the graph screen on the left half of the screen and the table on the right half. You would usually use this mode when you want to have the graph and the table show up at the same time. With graph screen text, the maximum value for

Discussed In: |
Tutorial 25 |

The Horiz (horizontal) split-screen mode displays the graph screen on the top half of the screen and displays the home screen on the bottom. You would use this mode if you had a graph on the top and you wanted to the user to also view some text that you have on the home screen. With graph screen text, the maximum value for

Discussed In: |
Tutorial 25 |

Horizontal draws a horizontal line through the y coordinate that travels from the extreme left of the screen to the extreme right.

Discussed In: |
Tutorial 15 |

Discussed In: |
Tutorial 4 |

Input can be used in two ways. Input with a

Discussed In: |
Tutorial 5 |

int( returns the largest integer less than or equal to a real or complex number, expression, list or matrix. For a given

Discussed In: |
Tutorial 30 |

iPart returns the integer part or parts of real or complex numbers, expressions, lists, and matrices. To find iPart(, press and . Scroll down to

Discussed In: |
Tutorial 30 |

Used to create new lists

Discussed In: |
Tutorial 3 |

Label specifies the label to which the program can go to. The

Discussed In: |
Tutorial 6 |

A test command that checks to see if

Discussed In: |
Tutorial 4 |

A test command that checks to see if

Discussed In: |
Tutorial 4 |

Line( draws a line segment between the coordinates (

Discussed In: |
Tutorial 15 |

A list is a type of variable in which you can store a series of numbers. Whenever you want to create or store a list you must put the series of numbers, separated by commas, inside {}. The TI-83/TI-83 Plus has six list names in memory:

Discussed In: |
Tutorial 3 |

A matrix is a two-dimensional array filled with numbers. Your calculator has 10 matrix variables,

Discussed In: |
Tutorial 3 |

Menu( generates a menu of up to seven items during program execution. If Menu( is encountered during program execution, the menu screen is displayed with the specified menu items, the pause indicator is on, and execution pauses until the user selects a menu item.

Discussed In: |
Tutorial 9 |

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