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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

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

C

` (2)/(e) `

D

` (1)/(e) `

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Verified by Experts

The correct Answer is:
D
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