HP 33s User Manual
Page 106
6–14
Entering and Evaluating Equations
Order
Operation
Example
1
Functions and Parentheses
1%-2, 1%-2
2 Power
(
)
%:
3
Unary Minus (
^
)
.
4
Multiply and Divide
%º&, ª
5
Add and Subtract
-, .
6 Equality
/
So, for example, all operations inside parentheses are performed before
operations outside the parentheses.
Examples:
Equations
Meaning
º:/
a
× (b
3
) = c
1º2:/
(a
× b)
3
= c
-ª/
a
+ (b/c) = 12
1-2ª/
(a + b) / c = 12
01!-(. 2:
[%CHG ((t + 12), (a – 6)) ]
2
You can't use parentheses for implied multiplication. For example, the expression
p
(1 – f) must be entered as º1.2, with the "º" operator inserted between P
and the left parenthesis.