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Let f(x)=[tan^2x], where [.]denotes the ...

Let `f(x)=[tan^2x]`, where [.]denotes the greatest integer function. Then

A

`lim_(xto0)f(x)` doesn't exist

B

f(x) is continuous at x=0

C

f(x) is not differentiable at x=0

D

`f'(0)=1`

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The correct Answer is:
B
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