A solution of the equation tan^(-1)(1+...

A solution of the equation
`tan^(-1)(1+x)+tan^(-1)(1-x)=(pi)/(2)` is

A

(a) `x=1`

B

(b) `x=-1`

C

(c) `x=0`

D

(d) `x=pi`

Verified by Experts

The correct Answer is:

C

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