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2. Calculations of Functions
2-1.
Function Ke
ys
How to Use Function Keys
When using the function ke
y
s. there
are
two cases of
inpu
t.
One
is
of one
variable
and the other of two
va
ri
ables.
The results of these inputs can be
obtained
according to the following operational procedures.
The
calcu
lation
accuracy at this
time
is always based
on
10
digits.
I
Key operation
Input
I
Kinds
of
functions
variables
2
3
4
5
6
7
I
I
I
,3,
2
.
I
I
I
various
V
'
V
J
a
,
stn
,
cos
, tan,
---->
~
variable
function:
(result)
I
1
variable
log,
111,
ex,a
~,
DEG,
RAD
I
keys
i
arc
(sin,
c
os,
tan
)
var
iable
III.C,a
I(result)
II
I
variable
Ivariable
I
(result)
I
II
II
(a)
(x)
:varia
ble
(result)
(result)
---4
2
variables
REC
B
B
~
(r)
(e)
(x)
(y
)
Ivariable
(resu It)
(result)
- +
POL
(y)
i3
(r)
51
(6 )
t
~
'
(
1(X'Yx)
However,
x,
y,
r,
e ~
(
1) Regarding di
sp
la
y
method
last
1
or 2 digits are replaced
with
zeros.
As a rule, the results are displayed with an
(Ex.)
e
25
accuracy of
10
digits.
(2511
..
.......
72'004
'899 '330.)
(Ex.)V3
237
(3
a ..
,
..
1.732050807)
(211 3711···
137
'
438'953'900.)
Sil1-
1
0.45
(2)
When function keys are used,
floating
calcul
(.45.
II ...
,
.26.74368395)
ations are
alwa
y
s
performed no
matter
what
the
When the results
co
nsist
only
of fractions,
decimal
poi
nt
selector dial designation.
10
digits
belo
w
the decimal point are dis
(Ex.) Setting
.~ ~
. . .
L
v
..
...,
played.
COS
30°
(Ex.
)
s
il1
45°
(3031 .
...
.
0.8660254038)
(4511 ..... 0.7071067812)
-·-30°33'33"
---->
Decimal
degree
log,o 3
(30.3333
E
...
3055916667)
(3
a
....
.
0.4771212548)
(3)
When
performing decimal
point selector dial
The
trailing zeros
in
the decimal part
of the
designation in the
result
,
depress the
0
key
results
are always
suppressed.
again.
(Ex.)
sin
30°
(30
II
....
.
0.5)
(Ex.) Setting
~
L
y
.. -,
25
2
.
(25
II .....
625
.)
cos
30°
When the
integer
of
the
result using
the
( 30
118
..
.. 0.8660)
II, II
o
r
II
key
is
11
or
12
digits, the
10
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