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If f(x)=cos^(-1)[(1-(logx)^2)/(1+(logx)^...

If `f(x)=cos^(-1)[(1-(logx)^2)/(1+(logx)^2)]` , then the value of `f'(e)` is equal to........

A

1

B

`(1)/(e)`

C

`(2)/(e)`

D

`(2)/(e ^(2))`

Text Solution

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The correct Answer is:
C
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