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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.