Operation Manual

Chapter 2: Math, Angle, and Test Operations 47
In MathPrint™ mode, the default H is 1EM3. You can switch to Classic mode to change H for
investigations.
Note: To speed the drawing of integration graphs (when
fnInt( is used in a Y= equation), increase the
value of the Xres window variable before you press s or set “Detect Asymptotes” off in FORMAT.
Using the Equation Solver
Solver
Solver displays the equation solver, in which you can solve for any variable in an equation. 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 is empty.
• The interactive solver editor (see step 3 picture below) is displayed when an equation is stored.
Entering an Expression in the Equation Solver
To enter an expression in the equation solver, assuming that the variable eqn is empty, follow these
steps.
1. Select
B: Solver from the MATH menu to display the equation editor.
Classic:
fnInt(expression,variable,lower,upper[,tolerance])
MathPrint™
Classic