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HP 25 User Manual

HP 25
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52
Function Keys
I FRAC I (fraction) key.
For
example,
to
see
the fractional por-
tion
of
123.456 used abo
!:
e:
Press Display
123.456
123.456
m I FRAC I 0.46
Only
the fractional
portion
of
the
number
is dis
played
,
rounded
here
to
normal
FI
X 2 displa
y.
When
m
~
is
pres
sed,
the
integer
portion
of
the
number
is
lost.
The
entire
number
,
of
course,
is
preserved
in the
LAST
X
register
.
Reciprocals
To
calculate
the reciprocal
of
a
number
in
the dis
pl
aye
d X-
register
,
then
press
m
oo
.
For
example,
to
calculate
the recip-
rocalof25:
Press Display
25
m
00
1L...:..:
0
.
--=-
04
-'---_--'
You
can
also
calculate
the reciprocal
of
a value
in
a
previou
s
calculation
without
reentering
the
number.
For
ex
ample, to
calculate
113
+ 1/6
Press Display
3
m
oo
0.
33
Reciprocalof3
.
6
m
oo
0.17
Reciprocalof6
.
[±J
0.50
Sum
of
reciproc
als.
m
oo
I 2.00
Reciprocal
of
sum.
Square Roots
To
calculate
the
square
root
of
a
number
in
the di
sp
layed
X-regis
ter
, press D
[ill
.
For
example,
to find the
squa
re
roo
t
of
16
:
Press Display
16
D
[ill
"---.:
4.
-'--
00=---
_--'
To
find the
square
root
of
the result:
Press Display
D I
ff
I
LI
2
---'-
.0
-'--'
0
'----_---"

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HP 25 Specifications

General IconGeneral
BrandHP
Model25
CategoryCalculator
LanguageEnglish

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