Solving And Integrating Programs; Solving A Program - HP 33s User Manual

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
the unknown variable; use
resume the calculation, press
To write a program for SOLVE:
The program can use equations and ALG or RPN operations — in whatever
combination is most convenient.
1. Begin the program with a label . This label identifies the function that you want
SOLVE to evaluate (  label ).
º s
Û
Å ¥
or . The current best estimate of the root is in
º È
to view it without disturbing the stack. To
¥
.
Solving and Integrating Programs
label. (You can skip this step if
variable.
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