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tan^(-1) "" ( 1 + x )/( 1 -x ) का अवकलन ...

`tan^(-1) "" ( 1 + x )/( 1 -x )` का अवकलन गुणांक है -

A

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

B

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

C

`(1)/(x +1)`

D

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

लिखित उत्तर

Verified by Experts

The correct Answer is:
A
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