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Byju's Answer
Standard XII
Mathematics
Continuity in an Interval
If fx=lim n...
Question
If
f
(
x
)
=
lim
n
→
∞
(
1
−
sin
2
x
)
n
,
n
∈
N
, then
A
f
(
π
4
)
is nearly zero
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B
f
(
π
4
)
is equal to
1
2
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C
f
(
x
)
is discontinuous at infinte number of points
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D
f
(
x
)
is a periodic
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Solution
The correct options are
C
f
(
x
)
is discontinuous at infinte number of points
D
f
(
x
)
is a periodic
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0
Similar questions
Q.
If
f
(
x
)
=
1
+
cos
x
+
cos
2
x
+
⋯
∞
, then
f
(
x
)
+
f
(
π
2
+
x
)
+
f
(
π
2
−
x
)
+
f
(
π
−
x
)
equals
Q.
Let
f
(
x
)
=
∫
sin
2
x
0
sin
−
1
(
√
t
)
d
t
+
∫
cos
2
x
0
cos
−
1
(
√
t
)
d
t
, then
Q.
If
f
(
x
)
=
0
is a quadratic equation such that
f
(
−
π
)
=
f
(
π
)
=
0
and
f
(
π
2
)
=
−
3
π
2
4
, then
lim
x
→
−
π
f
(
x
)
sin
(
sin
x
)
is equal to
Q.
Assertion :If
f
(
x
)
=
1
n
[
(
n
+
1
)
(
n
+
2
)
(
n
+
3
)
.
.
.
(
n
+
n
)
]
1
n
then
lim
n
→
∞
f
(
x
)
equals
4
e
Reason:
lim
n
→
∞
1
n
f
(
r
n
)
=
∫
1
0
f
(
x
)
d
x
Q.
If
f
(
x
)
is discontinuous at only
x
=
1
such that
f
2
(
x
)
=
4
∀
x
ϵ
R
, then number of points
f
(
x
)
is discontinuous are
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