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RPN: The Automatic Memory Stack 2–13
Exercises
Calculate:
0000.181
05.0
)53805.16(
=
x
Solution:
16.3805
5
z#
.05
q
Calculate:
5743.21)]98()76[()]54()32[( =+×+++×+
Solution:
2
3
4
5
z#
6
7
8
9
z
#
Calculate:
(10 – 5)
÷
[(17 – 12)
×
4] = 0.2500
Solution:
17
12
4
z
10
5
[q
or
10
5
17
12
4
zq
Order of Calculation
We recommend solving chain calculations by working from the innermost
parentheses outward. However, you can also choose to work problems in a
left–to–right order.
For example, you have already calculated:
4
÷
[14 + (7
×
3) – 2]
by starting with the innermost parentheses (7
×
3) and working outward, just
as you would with pencil and paper. The keystrokes were 7
3
z
14
2
4
[q
.
If you work the problem from left–to–right, press
4
14
7
3
z
2
q
.