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What is int(-1)^1 {d/(dx) (tan^-1 1/x)}d...

What is `int_(-1)^1 {d/(dx) (tan^-1 1/x)}dx` equal to

A

0

B

`- pi/4`

C

`- pi/2`

D

`pi/2`

Text Solution

Verified by Experts

The correct Answer is:
D
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