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d/(dx)[tan^(-1)((4x-4x^3)/(1-6x^2+x^4))]...

`d/(dx)[tan^(-1)((4x-4x^3)/(1-6x^2+x^4))]=`

A

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

B

`(4)/(1+x^(2))`

C

`(-4)/(1+x^(2))`

D

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

Text Solution

Verified by Experts

The correct Answer is:
B
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