HP 33s - Manual (Page 67)

Real–Number Functions 4–3
In RPN mode, to calculate a number y raised to a power x, key in y ‘ x,
then press . (For y > 0, x can be any number; for y < 0, x must be an odd
integer; for y = 0, x must be positive.)
To Calculate: Press: Result:
15
2
15 !
)

10
6
6 { 
8
8
)
5 4 5 ‘ 4
)

2
–1.4
2 ‘ 1.4 ^
)

(–1.4)
3
1.4 ^ ‘ { $
.)


196 196 #
)

3
125 − 125 ^ { @
.)

In RPN mode, to calculate a root x of a number y (the x
th
root of y), key in y
‘ x , then press . For y < 0, x must be an integer.
To Calculate: Press: Result:
4 625
625 ‘ 4
)

4 . 1 37893 .
− .37893 ‘ 1.4 ^
)

Trigonometry
Entering π
Press | N to place the first 12 digits of π into the X–register.
(The number displayed depends on the display format.) Because π is a function, it
doesn't need to be separated from another number by ‘ .
Note that the calculator cannot exactly represent π, since π is an irrational number.