Evalute the following integrals int (x...

Evalute the following integrals
`int (x + 1)/(x^(2) + 3x + 12)` dx

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The correct Answer is:

`(1)/(2)log|x^(2)+3x+12|-(1)/(sqrt(39))tan^(-1)((2x+3)/(sqrt(39))+c`

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