What is the integral of (x^2+7)/x ?

The integral of (x^2+7)/x is (x^2)/2+7ln|x|+C

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integral of (x^2+7)/x

\int \frac{x ^{2} + 7}{x} d x

\frac{x ^{2}}{2} + 7 ln ∣ x ∣ + C

Solution steps

\int \frac{x ^{2} + 7}{x} d x

Expand

\frac{x ^{2} + 7}{x} : x + \frac{7}{x}

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

\int x d x = \frac{x ^{2}}{2}

\int \frac{7}{x} d x = 7 ln ∣ x ∣

= \frac{x ^{2}}{2} + 7 ln ∣ x ∣

Add a constant to the solution

= \frac{x ^{2}}{2} + 7 ln ∣ x ∣ + C

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What is the integral of (x^2+7)/x ?
The integral of (x^2+7)/x is (x^2)/2+7ln|x|+C