What is the integral of 6/(6x-5) ?

The integral of 6/(6x-5) is ln|6x-5|+C

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integral of 6/(6x-5)

\int \frac{6}{6 x - 5} d x

ln ∣ 6 x - 5 ∣ + C

Solution steps

\int \frac{6}{6 x - 5} d x

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 6 \cdot \int \frac{1}{6 x - 5} d x

Apply u-substitution

: \int \frac{1}{6 u} d u

= 6 \cdot \int \frac{1}{6 u} d u

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 6 \cdot \frac{1}{6} \cdot \int \frac{1}{u} d u

Use the common integral:

\int \frac{1}{u} d u = ln (∣ u ∣)

= 6 \cdot \frac{1}{6} ln ∣ u ∣

Substitute back

u = 6 x - 5

= 6 \cdot \frac{1}{6} ln ∣ 6 x - 5 ∣

Simplify

6 \cdot \frac{1}{6} ln ∣ 6 x - 5 ∣ : ln ∣ 6 x - 5 ∣

= ln ∣ 6 x - 5 ∣

Add a constant to the solution

= ln ∣ 6 x - 5 ∣ + C

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