What is the integral of (3x+1)/(x^2+3x-10) ?

The integral of (3x+1)/(x^2+3x-10) is ln|x-2|+2ln|x+5|+C

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integral of (3x+1)/(x^2+3x-10)

\int \frac{3 x + 1}{x ^{2} + 3 x - 10} d x

ln ∣ x - 2 ∣ + 2 ln ∣ x + 5 ∣ + C

Solution steps

\int \frac{3 x + 1}{x ^{2} + 3 x - 10} d x

Take the partial fraction of

\frac{3 x + 1}{x ^{2} + 3 x - 10} : \frac{1}{x - 2} + \frac{2}{x + 5}

= \int \frac{1}{x - 2} + \frac{2}{x + 5} d x

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{1}{x - 2} d x + \int \frac{2}{x + 5} d x

\int \frac{1}{x - 2} d x = ln ∣ x - 2 ∣

\int \frac{2}{x + 5} d x = 2 ln ∣ x + 5 ∣

= ln ∣ x - 2 ∣ + 2 ln ∣ x + 5 ∣

Add a constant to the solution

= ln ∣ x - 2 ∣ + 2 ln ∣ x + 5 ∣ + C

What is the integral of (3x+1)/(x^2+3x-10) ?
The integral of (3x+1)/(x^2+3x-10) is ln|x-2|+2ln|x+5|+C