What is the integral of (x+5)/(x-4) ?

The integral of (x+5)/(x-4) is 9ln|x-4|+x+C

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integral of (x+5)/(x-4)

\int \frac{x + 5}{x - 4} d x

9 ln ∣ x - 4 ∣ + x + C

Solution steps

\int \frac{x + 5}{x - 4} d x

\frac{x + 5}{x - 4} = \frac{9}{x - 4} + 1

= \int \frac{9}{x - 4} + 1 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{9}{x - 4} d x + \int 1 d x

\int \frac{9}{x - 4} d x = 9 ln ∣ x - 4 ∣

\int 1 d x = x

= 9 ln ∣ x - 4 ∣ + x

Add a constant to the solution

= 9 ln ∣ x - 4 ∣ + x + C

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What is the integral of (x+5)/(x-4) ?
The integral of (x+5)/(x-4) is 9ln|x-4|+x+C