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

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

A

(a) `1/4[(2x^(2)+1)/(x^(2)+1)^(2)]+K`

B

(b) `-1/4[(2x^(2)+1)/(x^(2)+1)^(2)]+K`

C

(c) `1/3[(2x^(2)+1)/(x^(2)+1)^(2)]+K`

D

(d) `-1/3[(2x^(2)+1)/(x^(2)+1)^(2)]+K`

Verified by Experts

The correct Answer is:

B

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