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The value of differentiation of tan^(-1)...

The value of differentiation of `tan^(-1)x` with respect to `tan^(-1) ((sqrt(1+ x^(2)) -1)/(x))` is `k`. Then `k//2` is

A

`1//2`

B

`1`

C

`2`

D

`-1`

Text Solution

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The correct Answer is:
B
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