What is the integral of (3x-4)/(x^2-x-2) ?

The integral of (3x-4)/(x^2-x-2) is 7/3 ln|x+1|+2/3 ln|x-2|+C

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integral of (3x-4)/(x^2-x-2)

\int \frac{3 x - 4}{x ^{2} - x - 2} d x

\frac{7}{3} ln ∣ x + 1 ∣ + \frac{2}{3} ln ∣ x - 2 ∣ + C

Solution steps

\int \frac{3 x - 4}{x ^{2} - x - 2} d x

Take the partial fraction of

\frac{3 x - 4}{x ^{2} - x - 2} : \frac{7}{3 ( x + 1 )} + \frac{2}{3 ( x - 2 )}

= \int \frac{7}{3 ( x + 1 )} + \frac{2}{3 ( x - 2 )} 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{7}{3 ( x + 1 )} d x + \int \frac{2}{3 ( x - 2 )} d x

\int \frac{7}{3 ( x + 1 )} d x = \frac{7}{3} ln ∣ x + 1 ∣

\int \frac{2}{3 ( x - 2 )} d x = \frac{2}{3} ln ∣ x - 2 ∣

= \frac{7}{3} ln ∣ x + 1 ∣ + \frac{2}{3} ln ∣ x - 2 ∣

Add a constant to the solution

= \frac{7}{3} ln ∣ x + 1 ∣ + \frac{2}{3} ln ∣ x - 2 ∣ + C

\int \frac{5 x ^{2} + 9 x + 5}{( x ^{2} + 1 ) ^{2}} d x

\frac{d}{d a} (sin (a) - sin (2 a) + sin (3 a))

x \to 0 - lim (x cot (x))

y = \frac{7}{x ^{3}}

\frac{d}{d x} (\frac{1}{π - x})

What is the integral of (3x-4)/(x^2-x-2) ?
The integral of (3x-4)/(x^2-x-2) is 7/3 ln|x+1|+2/3 ln|x-2|+C