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On differentiating tan^(-1) [ ( sqrt( 1+...

On differentiating `tan^(-1) [ ( sqrt( 1+ x^(2))-1)/( x) ]` with respect to x, the result would be

A

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

B

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

C

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

D

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

Text Solution

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The correct Answer is:
A
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