This is one of the benefits of directories:
If you put general-purpose
programs such as RENAME
the HOME directory, you can always exe-
cute them but they don't clutter up the USER menu.
Now you can work in the new directory EE.
Drop the two path lists from the stack.
'Rl + INV(lNV(R2)+ INV(
Store the expression in a variable named EQl
1). You'll see
the reason for this name later.
IL _____ I
The variable EQl appears in the USER menu.
Let's assume that you'll use this expression for a variety of problems,
each of which you want to treat independently. To do so, you can put
the values for each problem in a subdirectory for that problem.
Create a subdirectory SPl
1) for the first problem.
_ _ _ _
The name of the new subdirectory appears in the USER menu. Press
the menu key to switch to SPl.
The USER menu is empty again because the current directory (SP1) is
4: Repeating Calculations