Calculator User Manual

Chapter 2: Math, Angle, and Test Operations 64
Solving for a Variable in the Equation Solver
Solving for a Variable in the Equation SolverSolving for a Variable in the Equation Solver
Solving for a Variable in the Equation Solver
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 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-84 Plus will attempt to display the solution that is closest to your guess.