If y=tan^(-1) ((1+x)/(1-x)) then (dy)/(d...

If `y=tan^(-1) ((1+x)/(1-x))` then `(dy)/(dx)=`

A

`1/(1+x^(2))`

B

`-1/(1+x^(2))`

C

`pi/4 + tan^(-1) x`

D

`tan^(-1) x`

Verified by Experts

The correct Answer is:

A

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