What is the integral of (x^2+2x+1)/x ?

The integral of (x^2+2x+1)/x is (x^2)/2+2x+ln|x|+C

integral of (x^2+2x+1)/x

\int \frac{x ^{2} + 2 x + 1}{x} d x

\frac{x ^{2}}{2} + 2 x + ln ∣ x ∣ + C

Solution steps

\int \frac{x ^{2} + 2 x + 1}{x} d x

Expand

\frac{x ^{2} + 2 x + 1}{x} : x + 2 + \frac{1}{x}

= \int x + 2 + \frac{1}{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 2 d x + \int \frac{1}{x} d x

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

\int 2 d x = 2 x

\int \frac{1}{x} d x = ln ∣ x ∣

= \frac{x ^{2}}{2} + 2 x + ln ∣ x ∣

Add a constant to the solution

= \frac{x ^{2}}{2} + 2 x + ln ∣ x ∣ + C

\int 2 - csc^{2} (x) d x

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\int \frac{2 sin ( x )}{( cos ( 2 x ) cos ( x ) )} d x

\int \frac{( x + 4 ) ^{2}}{x ^{2}} d x

\int x^{2} + 4 x + 1 d x

What is the integral of (x^2+2x+1)/x ?
The integral of (x^2+2x+1)/x is (x^2)/2+2x+ln|x|+C