HP 33s User Manual page 106

Order
1
2
3
4
5
6
So, for example, all operations inside parentheses are performed before
operations outside the parentheses.
Examples:
Equations





You can't use parentheses for implied multiplication. For example, the expression
p (1 – f ) must be entered as  , with the "  " operator inserted between P
and the left parenthesis.
6–14
Entering and Evaluating Equations
Operation
Functions and Parentheses
)
Power ( )
z
Unary Minus ( )
Multiply and Divide
Add and Subtract
Equality
Example
 , 


 , 
 , 

Meaning
3
a ( b ) = c
3
( a b ) = c
a + ( b / c ) = 12
( a + b ) / c = 12
[%CHG (( t + 12), ( a – 6)) ]
2