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Popular Calculus >

integral of 1/(x+45)

Solution

\int \frac{1}{x + 45} d x

Solution

ln ∣ x + 45 ∣ + C

Solution steps

\int \frac{1}{x + 45} d x

Apply u-substitution

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

Use the common integral:

\int \frac{1}{u} d u = ln (∣ u ∣)

= ln ∣ u ∣

Substitute back

u = x + 45

= ln ∣ x + 45 ∣

Add a constant to the solution

= ln ∣ x + 45 ∣ + C

Graph

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Frequently Asked Questions (FAQ)

What is the integral of 1/(x+45) ?
The integral of 1/(x+45) is ln|x+45|+C