HP 33S, User Manual

Page: 67 / 388

Real–Number Functions
4–3
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
In RPN mode, to calculate a number y raised to a power x , key in y
Ï
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
¹ !

5
4
5
Ï
4
)

2
–1.4
2
Ï
1.4
z )

(–1.4)
3
1.4
z Ï ¹ @

196
196
?

3
125
−
125
z ¹ \

In RPN mode, to calculate a root x of a number y (the x
th
root of y ), key in y
Ï
x , then press
'
. For y
<
0, x must be an integer.
To Calculate: Press: Result:
4
625
625
Ï
4
'

4 . 1
37893 .
− .37893
Ï
1.4
z '

Trigonometry
Entering
π
Press
º j
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
Ï
.
Note that the calculator cannot exactly represent
π
, since
π
is an irrational number.