What is the integral of ((2x^2-5x+2))/((x^3+x)) ?

The integral of ((2x^2-5x+2))/((x^3+x)) is 2ln|x|-5arctan(x)+C

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integral of ((2x^2-5x+2))/((x^3+x))

\int \frac{( 2 x ^{2} - 5 x + 2 )}{( x ^{3} + x )} d x

2 ln ∣ x ∣ - 5 arctan (x) + C

Solution steps

\int \frac{2 x ^{2} - 5 x + 2}{x ^{3} + x} d x

Take the partial fraction of

\frac{2 x ^{2} - 5 x + 2}{x ^{3} + x} : \frac{2}{x} - \frac{5}{x ^{2} + 1}

= \int \frac{2}{x} - \frac{5}{x ^{2} + 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{2}{x} d x - \int \frac{5}{x ^{2} + 1} d x

\int \frac{2}{x} d x = 2 ln ∣ x ∣

\int \frac{5}{x ^{2} + 1} d x = 5 arctan (x)

= 2 ln ∣ x ∣ - 5 arctan (x)

Add a constant to the solution

= 2 ln ∣ x ∣ - 5 arctan (x) + C

\frac{d}{d y} (e^{- x} cos (y))

x \to 6 + lim (ln (7 - x))

y^{^{'}} = 10 - y

\int \frac{1}{4 + y ^{2}} d y

\frac{d}{d x} (\frac{x ^{2} + 4 x + 3}{x ^{2} + x})

What is the integral of ((2x^2-5x+2))/((x^3+x)) ?
The integral of ((2x^2-5x+2))/((x^3+x)) is 2ln|x|-5arctan(x)+C