What is the integral of 9/x ?

The integral of 9/x is 9ln|x|+C

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integral of 9/x

integral

\frac{9}{x}

9 ln ∣ x ∣ + C

Solution steps

\int \frac{9}{x} d x

Take the constant out:

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

= 9 \cdot \int \frac{1}{x} d x

Use the common integral:

\int \frac{1}{x} d x = ln (∣ x ∣)

= 9 ln ∣ x ∣

Add a constant to the solution

= 9 ln ∣ x ∣ + C

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