HP 33s - 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: