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Byju's Answer
Standard XII
Mathematics
Algebra of Limits
If fx= tan ...
Question
If
f
(
x
)
=
tan
x
tan
x
then
A
lim
x
→
0
f
(
x
)
does not exists
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B
lim
x
→
0
f
(
x
)
exists
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C
f
(
x
)
has fundamental period
π
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D
all of these
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Solution
The correct option is
C
lim
x
→
0
f
(
x
)
exists
f
(
x
)
=
tan
x
tan
x
lim
x
→
0
tan
x
x
×
x
tan
x
=
1
×
1
=
1
∴
Limit exists.
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0
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⎨
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