User Guide

Chapter 2: Math, Angle, and Test Operations 43
• The default lower and upper bounds appear in the last line of the editor
(
bound={L1â99,1â99}).
•A $ is displayed in the first column of the bottom line if the editor continues beyond the
screen.
Note: To use the solver to solve an equation such as K=.5MV
2
, enter eqn:0=KN.5MV
2
in the
equation editor.
Entering and Editing Variable Values
When you enter or edit a value for a variable in the interactive solver editor, the new value is stored
in memory to that variable.
You can enter an expression for a variable value. It is evaluated when you move to the next
variable. Expressions must resolve to real numbers at each step during the iteration.
You can store equations to any
VARS Y-VARS variables, such as Y1 or r6, and then reference the
variables in the equation. The interactive solver editor displays all variables of all Y= functions
recalled in the equation.
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 B: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 †.