If y=cos^(-1)((2x)/(1+x^(2))), then (dy)...

If `y=cos^(-1)((2x)/(1+x^(2)))`, then `(dy)/(dx)` is equal to

A

` (1)/(sqrtx(1+x)) `

B

` (-1)/(sqrtx(1+x)) `

C

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

D

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

Verified by Experts

The correct Answer is:

B

Differential Equation
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