This is the program:
« '1/3*œ*H^2*(3*R-H)' NUM "
Now use SPH to calculate the volume of a spherical cap of radius
r = 10 and height h = 3.
First, store the data in the appropriate variables. Then select the VAR menu and execute the program. The
answer is returned to level 1 of the stack.
10 O R K
3 O H K
Viewing and Editing Programs
You view and edit programs the same way you view and edit other objects — using the command line.
To view or edit a program:
1. View the program:
If the program is in level 1, press ˜ (or use the EDIT command).
If the program is stored in a variable, use the Filer (!¡) to select the variable and press EDIT ('),
or press J, then @ and the variable's menu key (a shortcut to recall a variable's contents to level 1),
followed by ˜. Alternatively, with the variable name in level 1 press „ ˜ (or use the EDITB, VISIT
or VISITB command).
2. Optional: Make changes.
3. Press ` to save any changes (or press − to discard changes) and return to the stack, or to Filer if you
used Filer to select the program.
Filer lets you change a stored program without having to do a store operation. From the stack you can change a
program and then store the new version in a different variable.
While you're editing a program, you may want to switch the command-line entry mode between Program-entry
mode (for editing most objects) and Algebraic/Program-entry mode (for editing algebraic objects). The PRG
and ALG annunciators indicate the current mode.
To switch between entry modes:
Edit SPH from the previous example so that it stores the number from level 1 into variable H and
the number from level 2 into variable R.
Select SPH from the soft keys.
Move the cursor past the first program delimiter and insert the new program steps.
Save the edited version of SPH in the variable. Then, to verify that the changes were saved, view SPH in the
1-6 RPL Programming