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Variables and Folders

kSingle-character Variable Precautions

Your ClassPad supports the use of single-character variables, which are variables whose names consist of a single character like “a” or “x”. Some ClassPad keys (x, y, Z keypad keys, math (mth) soft keyboard X, Y, Z, [ keys, V key set keys, etc.) are dedicated single-character variable name input keys. You cannot use such a key to input a variable name that has more than one character.

For example, pressing the keypad keys xand yin succession is interpreted by the ClassPad as the multiplication expression “x ⋅ y”, and not as the characters “xy”. In order to input a variable name made up of two or more characters, use the alphabet (abc) keyboard. For more information, see “Using Single-character Variables” on page 1-6-12.

kCreating a New Variable

The most common way to create a new variable is assigning a value or expression to the applicable variable name. Use the variable assignment key (W) to assign data to a variable.

Assign key

This key is included on the math (mth) and 2D soft keyboards.

The following is an example of assignment to a variable while “main” is specified as the current folder.

Example: To create a new variable named “eq1” and assign the expression 2x + 1 to it The following assumes that there are no variables named “eq1” or “x” currently in the “main” folder.

u ClassPad Operation

(1)On the application menu, tap Jto start the Main application.

(2)Press kto display the soft keyboard, and then perform the following key operation.

9cX+bW0eqbw

•This creates a variable named “eq1” in the current folder (the “main” folder in this example), and assigns the expression 2x + 1 to it.

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