Texas Instruments TITANIUM TI-89 - Manual (Page 14)

Getting Started 14
Example: Access the VAR-LINK [All] screen, where you can manage variables and Apps.
Function keys Function keys Function keys Function keys
Use the function keys to perform the following operations:
• On the Apps desktop, open Apps and select or edit Apps categories.
• On the calculator Home screen, open toolbar menus to select math-related
operations.
• Within Apps, open toolbar menus to select App options.
Numeric keypad Numeric keypad Numeric keypad Numeric keypad
The numeric keypad lets you enter positive and negative numbers.
To enter a negative number, press ? before typing the number.
Note: Don’t confuse the negation key ( ?) with the subtraction key (|).
Press Result
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