int(1)/(x^(2)+4x+13)dx is equal to...

`int(1)/(x^(2)+4x+13)dx` is equal to

A

(a) `logabs(x^(2)+4x+13)+c`

B

(b) `1/3tan^(-1)((x+2)/3)+c`

C

(c) `logabs(2x+4)+c`

D

(d) `(2x+4)/(x^(2)+4x+13)^(2)+c`

Verified by Experts

The correct Answer is:

B

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