Differentiate the following w.r.t. x: co...

Differentiate the following w.r.t. `x: cos^(-1) (frac {1- x^2}{1+ x^2})`

A

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

B

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

C

`2/(1 + x^2)`

D

`1/(1 + x^2)`

Verified by Experts

The correct Answer is:

C

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