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SECTION
(d) Find
Ihe area of a elrcle
with a
3
foot
radius, i.e ..
A
"
JTR2 w!lh R
3
fet't.
Press
"' "
@
3
I£iiliIl
3.
EI
9
.
~
3.
1
4
15926
5
4
EI
28.
27433
389
POWER
S O
F
N
UMBERS
We have al readv set'n how
to
square
a number and
to
take
ilS reciprocal,
Ihatls,
how
to
lind
Xl and
X-
I.
The
I'll
key leiS
you
Imd any power
of a
posilillC number. Sup-
pose
you
wont to lind 2xZxZx2x2x2x2
27.
In
most
calculators
you·d have
10
do all
six
mu ltiplications. Here·s
how YOU do it
with Ihe
HP -35:
Press
S"
Comments
0
7
Enter
the power.
y.
I£iiliIl
7
Put It in Y
lID
2
Enter
the number,
X.
l'DI
"8
Take
27
The
power
(y)
does nOt have to
be
a whole number: It can
be
any number.
The HP-35 performs XY
wllh an mternal
program
using
logarithms and the answers
are nOI always
exael to Ihe
last
decimal p lace (sec Accuracy page
21).
For
e ~ample,
8
1
/
J
-
4. but" you
key
(ID
!mE
@
G
rnJ
III
you get
3 999999999
Call
It 4;
the
error is .000000001, or
only one
bl ilionthl
9
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