Texas Instruments Titanium TI-89 User Manual

Symbolic Manipulation 239
Temporarily Overriding a Variable
Temporarily Overriding a VariableTemporarily Overriding a Variable
Temporarily Overriding a Variable
By using the
“with” operator ( | ), you can:
Note: For more information about the | operator, refer to Typing the “With” Operator.
To type the
“with” operator ( | ), press:
@ Í
All one-letter variables (a – z) in the
current folder.
Note: For information about folders,
refer to the Calculator Home Screen
module.
From the Home screen
Clean Up menu, select
1:Clear a-z. You will be
prompted to press ¸ to
confirm the deletion.
• Temporarily override a variable’s defined
value.
• Temporarily define a value for an
undefined variable.
To delete: Do this:

Texas Instruments Titanium TI-89 Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
Memory	188 KB RAM, 2.7 MB Flash ROM
Type	Graphing Calculator
Display	Monochrome
Processor	Motorola 68000
Processor Speed	12 MHz
Power Source	4 AAA batteries
Connectivity	USB
Programming	TI-BASIC, Assembly
Operating System	AMS (Advanced Mathematics Software)