Parentheses calculations, Chain calculations – HP 33s User Manual
Page 315
ALG:
Summary
C–5
File name hp 33s_user's manual_English_E_HDPM20PIE30.doc Page : 409
Printed Date : 2005/10/17 Size : 13.7 x 21.2 cm
Parentheses Calculations
In ALG mode, you can use parentheses up to 13 levels. For example, suppose
you want to calculate:
9
12
85
30 ×
−
If you were to key in 30
¯
85
Ã
, the calculator would calculate the
intermediate result, 0.3529. However, that’s not what you want. To delay the
division until you’ve subtracted 12 from 85, use parentheses:
Keys: Display:
Description:
30
¯ º y
85
Ã
No calculation is
done.
12
º |
Calculates 85
− 12.
¸
9
_
Calculates 30/73.
Ï
Calculates 30/(85
−
12)
× 9.
You can omit the multiplication sign (
×) before a left parenthesis. Implied
multiplication is not available in Equation mode. For example, the expression 2
×
(5 – 4) can be entered as 2
º
y
5
Ã
4
º |
, without the
¸
key
inserted between 2 and the left parenthesis.
Chain Calculations
To do a chain calculation, you don’t need to press
Ï
after each operation,
but only at the very end.
For instance, to calculate
360
12
750×
you can enter either: