Texas Instruments TI-83 PLUS - Manual (Page 75)

TI-83 Plus Math, Angle, and Test Operations 72
Using the Equation Solver
Solver
Solver displays the equation solver, in which you can solve for any
variable in an equation. The equation is assumed to be equal to zero.
Solver is valid only for real numbers.
When you select Solver , one of two screens is displayed.
•
The equation editor (see step 1 picture below) is displayed when the
equation variable
eqn is empty.
•
The interactive solver editor is displayed when an equation is stored
in
eqn .
Entering an Expression in the Equation Solver
To enter an expression in the equation solver, assuming that the variable
eqn is empty, follow these steps.
1. Select 0:Solver from the
MATH
menu to display the equation editor.
2. Enter the expression in any of three ways.