What is the integral of 1/(5y-1) ?

The integral of 1/(5y-1) is 1/5 ln|5y-1|+C

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integral of 1/(5y-1)

\int \frac{1}{5 y - 1} d y

\frac{1}{5} ln ∣ 5 y - 1 ∣ + C

Solution steps

\int \frac{1}{5 y - 1} d y

Apply u-substitution

: \int \frac{1}{5 u} d u

= \int \frac{1}{5 u} d u

Take the constant out:

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

= \frac{1}{5} \cdot \int \frac{1}{u} d u

Use the common integral:

\int \frac{1}{u} d u = ln (∣ u ∣)

= \frac{1}{5} ln ∣ u ∣

Substitute back

u = 5 y - 1

= \frac{1}{5} ln ∣ 5 y - 1 ∣

Add a constant to the solution

= \frac{1}{5} ln ∣ 5 y - 1 ∣ + C

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