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Popular Calculus >

integral of (x+7)/x

Solution

\int \frac{x + 7}{x} d x

Solution

x + 7 ln ∣ x ∣ + C

Solution steps

\int \frac{x + 7}{x} d x

Expand

\frac{x + 7}{x} : 1 + \frac{7}{x}

= \int 1 + \frac{7}{x} d x

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int 1 d x + \int \frac{7}{x} d x

\int 1 d x = x

\int \frac{7}{x} d x = 7 ln ∣ x ∣

= x + 7 ln ∣ x ∣

Add a constant to the solution

= x + 7 ln ∣ x ∣ + C

Graph

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Frequently Asked Questions (FAQ)

What is the integral of (x+7)/x ?
The integral of (x+7)/x is x+7ln|x|+C