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If u=sin^(-1)((2x)/(1+x^(2))) and v=tan^...

If `u=sin^(-1)((2x)/(1+x^(2)))` and `v=tan^(-1)((2x)/(1-x^(2)))`, then `(du)/(dv)` is :

A

x

B

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

C

1

D

(1/4)

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The correct Answer is:
C
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