Solving and Integrating Programs
Solving a Program
In chapter 7 you saw how you can enter an equation — it's added to the equation
list — and then solve it for any variable. You can also enter a program that
calculates a function, and then solve it for any variable. This is especially useful if
the equation you're solving changes for certain conditions or if it requires repeated
calculations.
To solve a programmed function:
1. Enter a program that defines the function. (See "To write a program for SOLVE"
below.)
2. Select the program to solve: press
you're re–solving the same program.)
3. Solve for the unknown variable: press
Notice that FN= is required if you're solving a programmed function, but not if
you're solving an equation from the equation list.
To halt a calculation, press
appear in line 2. The current best estimate of the root is in the unknown variable;
use
press
.
To write a program for SOLVE:
The program can use equations and ALG or RPN operations — in whatever
combination is most convenient.
or
to view it without disturbing the stack. To resume the calculation,
label. (You can skip this step if
and the message will
Solving and Integrating Programs
15
variable.
15-1