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

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

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

integral

\frac{1}{( 2 x ^{2} + x )}

ln ∣ x ∣ - ln ∣ 2 x + 1 ∣ + C

Solution steps

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

Take the partial fraction of

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

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

\int \frac{1}{x} d x = ln ∣ x ∣

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

= ln ∣ x ∣ - ln ∣ 2 x + 1 ∣

Add a constant to the solution

= ln ∣ x ∣ - ln ∣ 2 x + 1 ∣ + C

\frac{sin ^{7} ( x )}{cos ^{2} ( x )}

x^{2} - 2 x + 1

\frac{1}{( 1 + r ^{2} ) ^{2}}

\frac{1}{( 1 + ( x ) ^{\frac{1}{2}} )}

\frac{( 1 - x )}{( 1 + x )}

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