Texas Instruments TI-89 Titanium User Manual page 666

Clearing Variables Before Leaving the Numeric Solver
When you solve an equation, its variables still exist after you leave the Numeric Solver. If
the equation contains single-character variables, their values may inadvertently affect
later symbolic calculations. Before leaving the Numeric Solver, you may want to:
1. Press:
@ 2 ˆ
to clear all single-character variables in the current folder.
2. Press ¸ to confirm the action.
The screen returns to the solver's
Any time you want to clear single-character variables listed in the solver, use:
Note:
@ 2 ˆ.
Numeric Solver
line.
eqn:
663