int (dx)/(x^2 + 2x + 2) equals :...

`int (dx)/(x^2 + 2x + 2)` equals :

A

`x tan^(-1) (x+1) +c`

B

`tan^(-1) (x+1)+c`

C

`(x+1) tan^(-1)x+c`

D

`tan^(-1)x+c`

Text Solution

Verified by Experts

The correct Answer is:

B

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