Getting Started 7
Getting Started
7
18. Let's calculate 16/3. However, the numbers are in the wrong order on the stack for this operation. No problem, press the RIGHT
cursor key to swap their positions (see Figure 8). Now press
/ and 5.33 (repeating) appears. Let’s square that result by
pressing the RIGHT cursor key to swap Levels 1 and 2, followed by the
Qkey. The final result, 28.44 (repeating) appears.
19. Pre ss @ followed by \ (BACKSPACE) to clear the stack.
20. Now let's work a more complex problem to show how RPN allows you to break down complex problems into simpler steps.
21. Calculate: .
To work this problem using RPN, break the larger problem down into smaller pieces. As you work through this example, watch and
note how the more complex problem becomes a series of simple parts as you work it out. Start on the inside of the parentheses and
work outwards. Begin by solving the upper part of the equation inside the square root. Type 8.33 ENTER 4
# 5.2 followed by
-. See how the result is calculated with 8.33 and -1.2 on the stack. Press * and move on to the next group of numbers.
Type 8.33
# 7.46 followed by -. .87 appears on the stack. Type .32 followed by * to multiply those numbers. You
now have -9.996 and .2784 on the stack (see Figure 11). Press
/ to divide those numbers. You have now solved the upper half
of that
equation. The intermediate result is -35.905...
Figure 8 Figure 9 Figure 10
x
8.33 4 5.2–()()8.33 7.46–()0.32[]÷
4.3 3.15 2.75–()1.71()2.01()–
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