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entry, its depression terminates the entry of mantissa and also sets the enter-expon.
ent mode.
13)
F
~~y
,(F)
Its depression
calls
the
"e"
sign (Function sign) to the display
and
enables you to start
scientific
calculations
as
in
funct
ion modes indicated above each
key.
Two consecutive
depression relieves F key function
.
14) Trigonometric function key (sin,
cos,
tan)
Performs
sine,
cosine and tangent
calculations.
If F key is depressed before this key,
inverse trigonometric (sin-I
x,
COS-
I
x,
tan-I
x) is performed.
15) Common and Natural logarithms
key
(log, In)
Performs
common
and natural
logarithms calculation.
If F key is depressed before this
key
,
Anti-logarithms (lOX, eX)
is
performed.
16) Square
roo
t key
(..jX)
Performs
square
root calculation. If F key is depressed
before
this
key,
square
calculation
(X2 ) is performed
.
17)
l/x
key (l/x)
Performs
rec
iprocal
calculation.
If F
key is
depressed before
this key
,
performs
entry
-
8
-
of
Pi
(3.1415926).
18
)
X-M key (X-M)
E
xc
hanges the
displayed number with the
m
emory
contents.
19)
y
to
the
x
th power
key(yX)
y
to
the
xt
h power
calculation
is
performed
if
the
f
o
ll
ow
ing
operational sequence
is
observed.
That is
to
enter
number for
y,
depress y
X
key, enter number
for
x and
depress
=
key
.
If F
key
is depressed before this key,
exchanges
the
displayed
number
with the
previous
by entered
number to perform
reciproca
l
calculation.
20) Sign change
key
(+/-)
Changes
the
sign
of
entered
the
mantissa or the exponent
number.
If F key is depressed
before this
key, perf
orms
Degrees-Minutes-Seconds
to
Deci
mal Degree
conversion.
21)
Degree/Gradian
/
Radian
mode
switch
Selects
Degree,
Gradian
,
Radian mode for trigonometric
or
in
verse
trigonometric
operation.
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9
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