Hp 49g Graphing Calculator Instrukcja Użytkownika Pobierz pdf (Strona 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.

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

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Hp 49g Graphing Calculator Instrukcja Użytkownika Strona 228