What is the integral of 1/(3x-4) ?

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

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integral of 1/(3x-4)

\int \frac{1}{3 x - 4} d x

\frac{1}{3} ln ∣ 3 x - 4 ∣ + C

Solution steps

\int \frac{1}{3 x - 4} d x

Apply u-substitution

: \int \frac{1}{3 u} d u

= \int \frac{1}{3 u} d u

Take the constant out:

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

= \frac{1}{3} \cdot \int \frac{1}{u} d u

Use the common integral:

\int \frac{1}{u} d u = ln (∣ u ∣)

= \frac{1}{3} ln ∣ u ∣

Substitute back

u = 3 x - 4

= \frac{1}{3} ln ∣ 3 x - 4 ∣

Add a constant to the solution

= \frac{1}{3} ln ∣ 3 x - 4 ∣ + C

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