Example 2: To use the line input mode to input the same expression as in Example 1 (2+ (2(2) / ((2) + 1))^2)

1.Tap the [Math1] tab and then enter the line input mode (light blue key).

2.Perform the key operation below:

2+(d2!2)N (!2)+1)ewE



Example 3: To use the template input mode to input ￿()



1.Tap the [Math2] tab and then enter the template input mode (white L key).

2.Perform the key operation below:

Oxe1f10exEExample 4: To use the template input mode to input ∫0 1(1 − 2)

1.Tap the [Math2] tab and then enter the template input mode (white L key).

2.Perform the key operation below:

7(1-xm2e)Qxeex

3.Tap the upper right input box of ∫ and then press 1. Next, tap the lower right input box of ∫ and then press 0.

4.To execute the calculation, press E.

Tip: For information about the contents and input formats of the functions in Example 3 and Example 4, see “2-7 Using the Action Menu” (page 59).

kUsing 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”).

uTo 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 [Var] (variable) key set (page 16)•Tapping the X, Y, or Z key of the [Number] key set•Tapping the [ key of the [Math2] key set•Pressing the x, y, or Zkeypad 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 using the [Var] key set, 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 appear in your textbook.

Example 1: ABCw

Chapter 1: Basics

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