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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

Verified by Experts

The correct Answer is:
B
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  11. d/dx(tan^-1(x/sqrt(a^2-x^2))

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