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If y = sin^(-1) ((1-x^(2))/(1+x^(2))), t...

If `y = sin^(-1) ((1-x^(2))/(1+x^(2)))`, then dy/dx =

A

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

B

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

C

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

D

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

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The correct Answer is:
A
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