Texas Instruments TITANIUM TI-89 - Manual (Page 239)

Symbolic Manipulation 239
Temporarily Overriding a Variable Temporarily Overriding a Variable Temporarily 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: