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If f(x)=sin^(-1) ((2x)/(1+x^2)) then f(x...

If `f(x)=sin^(-1) ((2x)/(1+x^2))` then `f(x)` is differentiable on

A

`[-1 , 11]`

B

`R - { -1, 1}`

C

`R - (- 1, 1 )`

D

None of these

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The correct Answer is:
B
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