Texas Instruments TI-82 STATS Manual Book page 60

Using the Equation Solver
Solving for a
Variable in the
Equation Solver
2.10 Math, Angle, and Test Operations
To solve for a variable using the equation solver after an
equation has been stored to
1. Select from the
0:Solver
interactive solver editor, if not already displayed.
2. Enter or edit the value of each known variable. All variables,
except the unknown variable, must contain a value. To move
the cursor to the next variable, press Í or †.
3. Enter an initial guess for the variable for which you are
solving. This is optional, but it may help find the solution
more quickly. Also, for equations with multiple roots, the
TI-82 STATS will attempt to display the solution that is
closest to your guess.
The default guess is calculated as
(continued)
, follow these steps.
eqn
menu to display the
MATH
(upper + lower)
.
2