What is the integral of x/((x-6)^2) ?

The integral of x/((x-6)^2) is ln|x-6|-6/(x-6)+C

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integral of x/((x-6)^2)

\int \frac{x}{( x - 6 ) ^{2}} d x

ln ∣ x - 6 ∣ - \frac{6}{x - 6} + C

Solution steps

\int \frac{x}{( x - 6 ) ^{2}} d x

Apply u-substitution

: \int \frac{u + 6}{u ^{2}} d u

= \int \frac{u + 6}{u ^{2}} d u

Expand

\frac{u + 6}{u ^{2}} : \frac{1}{u} + \frac{6}{u ^{2}}

= \int \frac{1}{u} + \frac{6}{u ^{2}} d u

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}{u} d u + \int \frac{6}{u ^{2}} d u

\int \frac{1}{u} d u = ln ∣ u ∣

\int \frac{6}{u ^{2}} d u = - \frac{6}{u}

= ln ∣ u ∣ - \frac{6}{u}

Substitute back

u = x - 6

= ln ∣ x - 6 ∣ - \frac{6}{x - 6}

Add a constant to the solution

= ln ∣ x - 6 ∣ - \frac{6}{x - 6} + C

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What is the integral of x/((x-6)^2) ?
The integral of x/((x-6)^2) is ln|x-6|-6/(x-6)+C