int(x^(3)dx)/(x^(2)+1)^(3) is equal to...

`int(x^(3)dx)/(x^(2)+1)^(3)` is equal to

A

`1/4 {(2x^2 +1)/((x^2 +1)^2 )}+K`

B

`-1/4 {(2x^2 +1)/((x^2 +1)^2 )}+K`

C

`1/3 {(2x^2 +1)/((x^2 +1)^2 )}+K`

D

`-1/3 {(2x^2 +1)/((x^2 +1)^2 )}+K`

Verified by Experts

The correct Answer is:

B

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