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Question

If f(x)=tanxtanx then

A
limx0f(x) does not exists
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B
limx0f(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 limx0f(x) exists
f(x)=tanxtanx
limx0tanxx×xtanx=1×1=1
Limit exists.

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