Texas Instruments TITANIUM TI-89 - Manual (Page 238)

Symbolic Manipulation 238
Deleting a Defined Variable Deleting a Defined Variable Deleting a Defined Variable Deleting a Defined Variable
You can “undefine” a defined variable by deleting it.
To delete: Do this:
One or more specified variables Use the DelVar function.
You can also delete
variables by using the
VAR-LINK screen
(
2 °) as
described in Memory and
Variable Management.
All variables of a specific type
Note: The Deltype function deletes all
variables of the specified type in all
folders.
Use the Deltype function.