Optimal. Leaf size=117 \[ \frac{a^2 \log \left (\sqrt [3]{a+b x^3}-\sqrt [3]{b} x\right )}{18 b^{4/3}}-\frac{a^2 \tan ^{-1}\left (\frac{\frac{2 \sqrt [3]{b} x}{\sqrt [3]{a+b x^3}}+1}{\sqrt{3}}\right )}{9 \sqrt{3} b^{4/3}}+\frac{1}{6} x^4 \left (a+b x^3\right )^{2/3}+\frac{a x \left (a+b x^3\right )^{2/3}}{9 b} \]
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Rubi [A] time = 0.0356335, antiderivative size = 117, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.2, Rules used = {279, 321, 239} \[ \frac{a^2 \log \left (\sqrt [3]{a+b x^3}-\sqrt [3]{b} x\right )}{18 b^{4/3}}-\frac{a^2 \tan ^{-1}\left (\frac{\frac{2 \sqrt [3]{b} x}{\sqrt [3]{a+b x^3}}+1}{\sqrt{3}}\right )}{9 \sqrt{3} b^{4/3}}+\frac{1}{6} x^4 \left (a+b x^3\right )^{2/3}+\frac{a x \left (a+b x^3\right )^{2/3}}{9 b} \]
Antiderivative was successfully verified.
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Rule 279
Rule 321
Rule 239
Rubi steps
\begin{align*} \int x^3 \left (a+b x^3\right )^{2/3} \, dx &=\frac{1}{6} x^4 \left (a+b x^3\right )^{2/3}+\frac{1}{3} a \int \frac{x^3}{\sqrt [3]{a+b x^3}} \, dx\\ &=\frac{a x \left (a+b x^3\right )^{2/3}}{9 b}+\frac{1}{6} x^4 \left (a+b x^3\right )^{2/3}-\frac{a^2 \int \frac{1}{\sqrt [3]{a+b x^3}} \, dx}{9 b}\\ &=\frac{a x \left (a+b x^3\right )^{2/3}}{9 b}+\frac{1}{6} x^4 \left (a+b x^3\right )^{2/3}-\frac{a^2 \tan ^{-1}\left (\frac{1+\frac{2 \sqrt [3]{b} x}{\sqrt [3]{a+b x^3}}}{\sqrt{3}}\right )}{9 \sqrt{3} b^{4/3}}+\frac{a^2 \log \left (-\sqrt [3]{b} x+\sqrt [3]{a+b x^3}\right )}{18 b^{4/3}}\\ \end{align*}
Mathematica [C] time = 0.0514558, size = 62, normalized size = 0.53 \[ \frac{x \left (a+b x^3\right )^{2/3} \left (-\frac{a \, _2F_1\left (-\frac{2}{3},\frac{1}{3};\frac{4}{3};-\frac{b x^3}{a}\right )}{\left (\frac{b x^3}{a}+1\right )^{2/3}}+a+b x^3\right )}{6 b} \]
Antiderivative was successfully verified.
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Maple [F] time = 0.026, size = 0, normalized size = 0. \begin{align*} \int{x}^{3} \left ( b{x}^{3}+a \right ) ^{{\frac{2}{3}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.98637, size = 919, normalized size = 7.85 \begin{align*} \left [\frac{3 \, \sqrt{\frac{1}{3}} a^{2} b \sqrt{-\frac{1}{b^{\frac{2}{3}}}} \log \left (3 \, b x^{3} - 3 \,{\left (b x^{3} + a\right )}^{\frac{1}{3}} b^{\frac{2}{3}} x^{2} - 3 \, \sqrt{\frac{1}{3}}{\left (b^{\frac{4}{3}} x^{3} +{\left (b x^{3} + a\right )}^{\frac{1}{3}} b x^{2} - 2 \,{\left (b x^{3} + a\right )}^{\frac{2}{3}} b^{\frac{2}{3}} x\right )} \sqrt{-\frac{1}{b^{\frac{2}{3}}}} + 2 \, a\right ) + 2 \, a^{2} b^{\frac{2}{3}} \log \left (-\frac{b^{\frac{1}{3}} x -{\left (b x^{3} + a\right )}^{\frac{1}{3}}}{x}\right ) - a^{2} b^{\frac{2}{3}} \log \left (\frac{b^{\frac{2}{3}} x^{2} +{\left (b x^{3} + a\right )}^{\frac{1}{3}} b^{\frac{1}{3}} x +{\left (b x^{3} + a\right )}^{\frac{2}{3}}}{x^{2}}\right ) + 3 \,{\left (3 \, b^{2} x^{4} + 2 \, a b x\right )}{\left (b x^{3} + a\right )}^{\frac{2}{3}}}{54 \, b^{2}}, \frac{6 \, \sqrt{\frac{1}{3}} a^{2} b^{\frac{2}{3}} \arctan \left (\frac{\sqrt{\frac{1}{3}}{\left (b^{\frac{1}{3}} x + 2 \,{\left (b x^{3} + a\right )}^{\frac{1}{3}}\right )}}{b^{\frac{1}{3}} x}\right ) + 2 \, a^{2} b^{\frac{2}{3}} \log \left (-\frac{b^{\frac{1}{3}} x -{\left (b x^{3} + a\right )}^{\frac{1}{3}}}{x}\right ) - a^{2} b^{\frac{2}{3}} \log \left (\frac{b^{\frac{2}{3}} x^{2} +{\left (b x^{3} + a\right )}^{\frac{1}{3}} b^{\frac{1}{3}} x +{\left (b x^{3} + a\right )}^{\frac{2}{3}}}{x^{2}}\right ) + 3 \,{\left (3 \, b^{2} x^{4} + 2 \, a b x\right )}{\left (b x^{3} + a\right )}^{\frac{2}{3}}}{54 \, b^{2}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 2.12514, size = 39, normalized size = 0.33 \begin{align*} \frac{a^{\frac{2}{3}} x^{4} \Gamma \left (\frac{4}{3}\right ){{}_{2}F_{1}\left (\begin{matrix} - \frac{2}{3}, \frac{4}{3} \\ \frac{7}{3} \end{matrix}\middle |{\frac{b x^{3} e^{i \pi }}{a}} \right )}}{3 \Gamma \left (\frac{7}{3}\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int{\left (b x^{3} + a\right )}^{\frac{2}{3}} x^{3}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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