What is the integral of x/(\sqrt[3]{x^2-1)} ?

The integral of x/(\sqrt[3]{x^2-1)} is 3/4 (x^2-1)^{2/3}+C

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integral of x/(\sqrt[3]{x^2-1)}

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

\frac{3}{4} (x^{2} - 1)^{\frac{2}{3}} + C

Solution steps

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

Apply u-substitution

= \int \frac{1}{2 3 u} d u

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= \frac{1}{2} \cdot \int \frac{1}{3 u} d u

Apply the Power Rule

= \frac{1}{2} \cdot \frac{3}{2} u^{\frac{2}{3}}

Substitute back

u = x^{2} - 1

= \frac{1}{2} \cdot \frac{3}{2} (x^{2} - 1)^{\frac{2}{3}}

Simplify

\frac{1}{2} \cdot \frac{3}{2} (x^{2} - 1)^{\frac{2}{3}} : \frac{3}{4} (x^{2} - 1)^{\frac{2}{3}}

= \frac{3}{4} (x^{2} - 1)^{\frac{2}{3}}

Add a constant to the solution

= \frac{3}{4} (x^{2} - 1)^{\frac{2}{3}} + C

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What is the integral of x/(\sqrt[3]{x^2-1)} ?
The integral of x/(\sqrt[3]{x^2-1)} is 3/4 (x^2-1)^{2/3}+C