HP 49g Graphing Calculator - Manual (Page 228)

Example stack calculations
Using a one-argument command
1. If the argument is not already on level 1 of the stack, enter the argu­
ment onto the command line (and, optionally, onto the stack). If the
argument is already on level 1 of the stack, go straight to step 2.
2. Execute the conunand.
1
sin 30
Example: To calculate
1. Enter 30 and press (iN
2. Press (M)-
The result of sin 30 is now on level 1 of the stack. This result can be
used as the argument of a further command without the result needing
to be manually entered.
3. Press ®.
Note that if you get a symbolic answer when you wanted a nmueric
answer, press 0®M)- The symbolic answer is evaluated.
Using a multi-argument command
after each one.
Method 1
1. Enter the arguments, pressing
2. Execute the command.
Example: To calculate 23 x 97
1. Enter 23 and press (B
2. Enter 97 and press (B
23 is now on level 2 of the stack and 97 is
on level 1.
3. Press ®.
In this example, the order in which you enter the arguments does not
affect the answer. However, this is not always the case with two-argument
commands. In the cube example on page E-3, the result of entering the 3
before the 52 is the 3 raised to the power of 52, a very different result to 52
raised to the power of 3. Other examples where the order you enter the
arguments is important include subtraction, division, and the percentage
commands (%, %CH, and %T).
12: 23
l: 97
Page E-4 Working in RPN mode