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Casio ClassPad 300 PLUS User Manual

Page 61

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20050501

1-6-12

Input

k Using Single-character Variables

As its name suggests, a single-character variable is a variable name that consists of a single
character like “

a

” or “

x

”. Input of single-character variable names is subject to different rules

than input of a series of multiple characters (like “abc”).

u To input a single-character variable name

Any character you input using any one of the following techniques is always treated as a
single-character variable.

• Tapping any key in the math (mth) keyboard’s V key set (page 1-6-10)
• Tapping any key in the 2D keyboard’s V key set (page 1-6-15)
• Tapping the X, Y, Z or [ key to the left of the 9 key of the math (mth) keyboard or

2D keyboard

• Pressing the

x, y, or Z keypad key

If you use the above key operations to input a series of characters, each one is treated as a
single-character variable. Inputting A, B, C, for example, is treated as the mathematical
expression a

× b × c, and not as the characters “abc”.

Tip

• The single-character variables described above make it possible for you to perform calculations

as they are written in your textbook.

Example 1: 9VABCw

Example 2:

2xyE

Tip

• When you input a single-character variable, its name appears on the display as an italicized bold

character. This is simply to let you know that the letter is a single-character variable name.