What is the integral of (7x^2+4x+7)/(x^3-1) ?

The integral of (7x^2+4x+7)/(x^3-1) is

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integral of (7x^2+4x+7)/(x^3-1)

\int \frac{7 x ^{2} + 4 x + 7}{x ^{3} - 1} d x

\frac{7}{3} ln x^{3} - 1 + \frac{11}{3} ln ∣ x - 1 ∣ - \frac{7}{6} ln 4 x^{2} + 4 x + 4 - \frac{7}{3} arctan (\frac{1}{3} (2 x + 1)) + \frac{2}{3} (23 arctan (\frac{2 x + 1}{3}) - ln \frac{4 x ^{2} + 4 x}{3} + \frac{4}{3}) + C

Solution steps

\int \frac{7 x ^{2} + 4 x + 7}{x ^{3} - 1} d x

Expand

\frac{7 x ^{2} + 4 x + 7}{x ^{3} - 1} : \frac{7 x ^{2}}{x ^{3} - 1} + \frac{4 x}{x ^{3} - 1} + \frac{7}{x ^{3} - 1}

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{7 x ^{2}}{x ^{3} - 1} d x + \int \frac{4 x}{x ^{3} - 1} d x + \int \frac{7}{x ^{3} - 1} d x

\int \frac{7 x ^{2}}{x ^{3} - 1} d x = \frac{7}{3} ln x^{3} - 1

\int \frac{4 x}{x ^{3} - 1} d x = 4 (\frac{1}{3} ln ∣ x - 1 ∣ + \frac{1}{6} (- ln \frac{4}{3} + \frac{4 x ^{2} + 4 x}{3} + 23 arctan (\frac{2 x + 1}{3})))

\int \frac{7}{x ^{3} - 1} d x = 7 (\frac{1}{3} ln ∣ x - 1 ∣ - \frac{1}{6} ln 4 x^{2} + 4 x + 4 - \frac{1}{3} arctan (\frac{1}{3} (2 x + 1)))

= \frac{7}{3} ln x^{3} - 1 + 4 (\frac{1}{3} ln ∣ x - 1 ∣ + \frac{1}{6} (- ln \frac{4}{3} + \frac{4 x ^{2} + 4 x}{3} + 23 arctan (\frac{2 x + 1}{3}))) + 7 (\frac{1}{3} ln ∣ x - 1 ∣ - \frac{1}{6} ln 4 x^{2} + 4 x + 4 - \frac{1}{3} arctan (\frac{1}{3} (2 x + 1)))

Simplify

\frac{7}{3} ln x^{3} - 1 + 4 (\frac{1}{3} ln ∣ x - 1 ∣ + \frac{1}{6} (- ln \frac{4}{3} + \frac{4 x ^{2} + 4 x}{3} + 23 arctan (\frac{2 x + 1}{3}))) + 7 (\frac{1}{3} ln ∣ x - 1 ∣ - \frac{1}{6} ln 4 x^{2} + 4 x + 4 - \frac{1}{3} arctan (\frac{1}{3} (2 x + 1))) : \frac{7}{3} ln x^{3} - 1 + \frac{11}{3} ln ∣ x - 1 ∣ - \frac{7}{6} ln 4 x^{2} + 4 x + 4 - \frac{7}{3} arctan (\frac{1}{3} (2 x + 1)) + \frac{2}{3} (23 arctan (\frac{2 x + 1}{3}) - ln \frac{4 x ^{2} + 4 x}{3} + \frac{4}{3})

= \frac{7}{3} ln x^{3} - 1 + \frac{11}{3} ln ∣ x - 1 ∣ - \frac{7}{6} ln 4 x^{2} + 4 x + 4 - \frac{7}{3} arctan (\frac{1}{3} (2 x + 1)) + \frac{2}{3} (23 arctan (\frac{2 x + 1}{3}) - ln \frac{4 x ^{2} + 4 x}{3} + \frac{4}{3})

Add a constant to the solution

= \frac{7}{3} ln x^{3} - 1 + \frac{11}{3} ln ∣ x - 1 ∣ - \frac{7}{6} ln 4 x^{2} + 4 x + 4 - \frac{7}{3} arctan (\frac{1}{3} (2 x + 1)) + \frac{2}{3} (23 arctan (\frac{2 x + 1}{3}) - ln \frac{4 x ^{2} + 4 x}{3} + \frac{4}{3}) + C

\int_{- 3}^{3} (\frac{18}{9 + x ^{2}} - 1) d x

x \to - \infty lim (∣ x ∣)

2 \frac{d y}{d x} + 4 y = - 8 y^{3}

\frac{\partial}{\partial x} (3 (y + 4) (x - 5)^{3})

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

What is the integral of (7x^2+4x+7)/(x^3-1) ?
The integral of (7x^2+4x+7)/(x^3-1) is