User Manual

2-10 Math, Angle, and Test Operations

8302MATH.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:12 PM Printed: 02/19/01 2:27

PM Page 10 of 26

To solve for a variable using the equation solver after an

equation has been stored to

eqn, follow these steps.

1. Select

0:Solver from the

MATH

menu to display the

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

†

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

83 will attempt to display the solution that

is closest to your guess.

The default guess is calculated as

(

upper +lower

)

Solving for a

Variable in the

Equation Solver