2.8 Math, Angle, and Test Operations
82STAT~4.DOC TI-83 international English Bob Fedorisko Revised: 10/28/05 12:19 PM Printed: 10/28/05 12:20
PM Page 8 of 26
82STAT~4.DOC TI-83 international English Bob Fedorisko Revised: 10/28/05 12:19 PM Printed: 10/28/05 12:20
PM Page 8 of 26
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 (see step 3 picture on page 2.9)
is displayed when an equation is stored in
eqn.
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.
• Enter the expression directly into the equation solver.
• Paste a Y= variable name from the VARS Y.VARS menu
to the equation solver.
• Press y [
RCL], paste a Y= variable name from the
VARS Y.VARS menu, and press Í. The expression is
pasted to the equation solver.
The expression is stored to the variable eqn as you enter it.
Using the Equation Solver
Solver
Entering an
Expression in the
Equation Solver
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