What is the integral of (2x+2)/(x^2+2x+2) ?

The integral of (2x+2)/(x^2+2x+2) is ln|x^2+2x+2|+C

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integral of (2x+2)/(x^2+2x+2)

\int \frac{2 x + 2}{x ^{2} + 2 x + 2} d x

ln x^{2} + 2 x + 2 + C

Solution steps

\int \frac{2 x + 2}{x ^{2} + 2 x + 2} d x

Expand

\frac{2 x + 2}{x ^{2} + 2 x + 2} : \frac{2 x}{x ^{2} + 2 x + 2} + \frac{2}{x ^{2} + 2 x + 2}

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int \frac{2 x}{x ^{2} + 2 x + 2} d x + \int \frac{2}{x ^{2} + 2 x + 2} d x

\int \frac{2 x}{x ^{2} + 2 x + 2} d x = ln x^{2} + 2 x + 2 - 2 arctan (x + 1)

\int \frac{2}{x ^{2} + 2 x + 2} d x = 2 arctan (x + 1)

= ln x^{2} + 2 x + 2 - 2 arctan (x + 1) + 2 arctan (x + 1)

Simplify

= ln x^{2} + 2 x + 2

Add a constant to the solution

= ln x^{2} + 2 x + 2 + C

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What is the integral of (2x+2)/(x^2+2x+2) ?
The integral of (2x+2)/(x^2+2x+2) is ln|x^2+2x+2|+C