HP 15c Scientific manual Arithmetic Calculations With Constants

Section 3: The Memory Stack, LAST X, and Data Storage 39

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Arithmetic Calculations With Constants

There are three ways (without using a storage register) to manipulate the memory stack to perform repeated calculations with a constant:

1.Use the LAST X register.

2.Load the stack with a constant and operate upon different numbers. (Clear the X-register every time you want to change the number operated upon)

3.Load the stack with a constant and operate upon an accumulating number. (Do not change the number in the X- register.)

LAST X. Use your constant in the X-register (that is, enter it second) so that it always will be saved in the LAST X register. Pressing K will retrieve the constant and place it into the X-register (the display). This can be done repeatedly.