More Exercises - HP 33s User Manual

This method takes one additional keystroke. Notice that the first intermediate result
is still the innermost parentheses (7
left–to–right is that you don't have to use
nomcommutaiive functions (
However, the first method (starting with the innermost parentheses) is often
preferred because:
It takes fewer keystrokes.
It requires fewer registers in the stack.
When using the left–to–right method, be sure that no more than
Note
four intermediate numbers (or results) will be needed at one
time (the stack can hold no more than four numbers).
The above example, when solved left–to–right, needed all registers in the stack at
one point:
Keys:
Ï Ï
4 14
Ï
7 3
¸
Ù
Ã
2
¯

More Exercises

Practice using RPN by working through the following problems:
Calculate:
(14 + 12) (18 – 12)
2–14
RPN: The Automatic Memory Stack
3). The advantage to working a problem
à ¯
and ).
Display:

 _ 




(9 – 7) = 78.0000
w
to reposition operands for
Description:
Saves 4 and 14 as intermediate
numbers in the stack.
At this point the stack is full with
numbers for this calculation.
Intermediate result.
Intermediate result.
Intermediate result.
Final result.