Optimal. Leaf size=115 \[ -\frac{\log \left (\sqrt [3]{a}+\sqrt [3]{b} \sqrt [3]{x}\right )}{\sqrt [3]{a} b^{5/3}}+\frac{\log (a+b x)}{3 \sqrt [3]{a} b^{5/3}}-\frac{2 \tan ^{-1}\left (\frac{\sqrt [3]{a}-2 \sqrt [3]{b} \sqrt [3]{x}}{\sqrt{3} \sqrt [3]{a}}\right )}{\sqrt{3} \sqrt [3]{a} b^{5/3}}-\frac{x^{2/3}}{b (a+b x)} \]
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Rubi [A] time = 0.0377792, antiderivative size = 115, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 5, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.385, Rules used = {47, 56, 617, 204, 31} \[ -\frac{\log \left (\sqrt [3]{a}+\sqrt [3]{b} \sqrt [3]{x}\right )}{\sqrt [3]{a} b^{5/3}}+\frac{\log (a+b x)}{3 \sqrt [3]{a} b^{5/3}}-\frac{2 \tan ^{-1}\left (\frac{\sqrt [3]{a}-2 \sqrt [3]{b} \sqrt [3]{x}}{\sqrt{3} \sqrt [3]{a}}\right )}{\sqrt{3} \sqrt [3]{a} b^{5/3}}-\frac{x^{2/3}}{b (a+b x)} \]
Antiderivative was successfully verified.
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Rule 47
Rule 56
Rule 617
Rule 204
Rule 31
Rubi steps
\begin{align*} \int \frac{x^{2/3}}{(a+b x)^2} \, dx &=-\frac{x^{2/3}}{b (a+b x)}+\frac{2 \int \frac{1}{\sqrt [3]{x} (a+b x)} \, dx}{3 b}\\ &=-\frac{x^{2/3}}{b (a+b x)}+\frac{\log (a+b x)}{3 \sqrt [3]{a} b^{5/3}}+\frac{\operatorname{Subst}\left (\int \frac{1}{\frac{a^{2/3}}{b^{2/3}}-\frac{\sqrt [3]{a} x}{\sqrt [3]{b}}+x^2} \, dx,x,\sqrt [3]{x}\right )}{b^2}-\frac{\operatorname{Subst}\left (\int \frac{1}{\frac{\sqrt [3]{a}}{\sqrt [3]{b}}+x} \, dx,x,\sqrt [3]{x}\right )}{\sqrt [3]{a} b^{5/3}}\\ &=-\frac{x^{2/3}}{b (a+b x)}-\frac{\log \left (\sqrt [3]{a}+\sqrt [3]{b} \sqrt [3]{x}\right )}{\sqrt [3]{a} b^{5/3}}+\frac{\log (a+b x)}{3 \sqrt [3]{a} b^{5/3}}+\frac{2 \operatorname{Subst}\left (\int \frac{1}{-3-x^2} \, dx,x,1-\frac{2 \sqrt [3]{b} \sqrt [3]{x}}{\sqrt [3]{a}}\right )}{\sqrt [3]{a} b^{5/3}}\\ &=-\frac{x^{2/3}}{b (a+b x)}-\frac{2 \tan ^{-1}\left (\frac{1-\frac{2 \sqrt [3]{b} \sqrt [3]{x}}{\sqrt [3]{a}}}{\sqrt{3}}\right )}{\sqrt{3} \sqrt [3]{a} b^{5/3}}-\frac{\log \left (\sqrt [3]{a}+\sqrt [3]{b} \sqrt [3]{x}\right )}{\sqrt [3]{a} b^{5/3}}+\frac{\log (a+b x)}{3 \sqrt [3]{a} b^{5/3}}\\ \end{align*}
Mathematica [C] time = 0.0039834, size = 27, normalized size = 0.23 \[ \frac{3 x^{5/3} \, _2F_1\left (\frac{5}{3},2;\frac{8}{3};-\frac{b x}{a}\right )}{5 a^2} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.009, size = 112, normalized size = 1. \begin{align*} -{\frac{1}{b \left ( bx+a \right ) }{x}^{{\frac{2}{3}}}}-{\frac{2}{3\,{b}^{2}}\ln \left ( \sqrt [3]{x}+\sqrt [3]{{\frac{a}{b}}} \right ){\frac{1}{\sqrt [3]{{\frac{a}{b}}}}}}+{\frac{1}{3\,{b}^{2}}\ln \left ({x}^{{\frac{2}{3}}}-\sqrt [3]{{\frac{a}{b}}}\sqrt [3]{x}+ \left ({\frac{a}{b}} \right ) ^{{\frac{2}{3}}} \right ){\frac{1}{\sqrt [3]{{\frac{a}{b}}}}}}+{\frac{2\,\sqrt{3}}{3\,{b}^{2}}\arctan \left ({\frac{\sqrt{3}}{3} \left ( 2\,{\sqrt [3]{x}{\frac{1}{\sqrt [3]{{\frac{a}{b}}}}}}-1 \right ) } \right ){\frac{1}{\sqrt [3]{{\frac{a}{b}}}}}} \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 [B] time = 1.39975, size = 987, normalized size = 8.58 \begin{align*} \left [-\frac{3 \, a b^{2} x^{\frac{2}{3}} - 3 \, \sqrt{\frac{1}{3}}{\left (a b^{2} x + a^{2} b\right )} \sqrt{\frac{\left (-a b^{2}\right )^{\frac{1}{3}}}{a}} \log \left (\frac{2 \, b^{2} x - a b + 3 \, \sqrt{\frac{1}{3}}{\left (a b x^{\frac{1}{3}} + \left (-a b^{2}\right )^{\frac{1}{3}} a + 2 \, \left (-a b^{2}\right )^{\frac{2}{3}} x^{\frac{2}{3}}\right )} \sqrt{\frac{\left (-a b^{2}\right )^{\frac{1}{3}}}{a}} - 3 \, \left (-a b^{2}\right )^{\frac{2}{3}} x^{\frac{1}{3}}}{b x + a}\right ) - \left (-a b^{2}\right )^{\frac{2}{3}}{\left (b x + a\right )} \log \left (b^{2} x^{\frac{2}{3}} + \left (-a b^{2}\right )^{\frac{1}{3}} b x^{\frac{1}{3}} + \left (-a b^{2}\right )^{\frac{2}{3}}\right ) + 2 \, \left (-a b^{2}\right )^{\frac{2}{3}}{\left (b x + a\right )} \log \left (b x^{\frac{1}{3}} - \left (-a b^{2}\right )^{\frac{1}{3}}\right )}{3 \,{\left (a b^{4} x + a^{2} b^{3}\right )}}, -\frac{3 \, a b^{2} x^{\frac{2}{3}} - 6 \, \sqrt{\frac{1}{3}}{\left (a b^{2} x + a^{2} b\right )} \sqrt{-\frac{\left (-a b^{2}\right )^{\frac{1}{3}}}{a}} \arctan \left (\frac{\sqrt{\frac{1}{3}}{\left (2 \, b x^{\frac{1}{3}} + \left (-a b^{2}\right )^{\frac{1}{3}}\right )} \sqrt{-\frac{\left (-a b^{2}\right )^{\frac{1}{3}}}{a}}}{b}\right ) - \left (-a b^{2}\right )^{\frac{2}{3}}{\left (b x + a\right )} \log \left (b^{2} x^{\frac{2}{3}} + \left (-a b^{2}\right )^{\frac{1}{3}} b x^{\frac{1}{3}} + \left (-a b^{2}\right )^{\frac{2}{3}}\right ) + 2 \, \left (-a b^{2}\right )^{\frac{2}{3}}{\left (b x + a\right )} \log \left (b x^{\frac{1}{3}} - \left (-a b^{2}\right )^{\frac{1}{3}}\right )}{3 \,{\left (a b^{4} x + a^{2} b^{3}\right )}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.11597, size = 184, normalized size = 1.6 \begin{align*} -\frac{2 \, \left (-\frac{a}{b}\right )^{\frac{2}{3}} \log \left ({\left | x^{\frac{1}{3}} - \left (-\frac{a}{b}\right )^{\frac{1}{3}} \right |}\right )}{3 \, a b} - \frac{x^{\frac{2}{3}}}{{\left (b x + a\right )} b} - \frac{2 \, \sqrt{3} \left (-a b^{2}\right )^{\frac{2}{3}} \arctan \left (\frac{\sqrt{3}{\left (2 \, x^{\frac{1}{3}} + \left (-\frac{a}{b}\right )^{\frac{1}{3}}\right )}}{3 \, \left (-\frac{a}{b}\right )^{\frac{1}{3}}}\right )}{3 \, a b^{3}} + \frac{\left (-a b^{2}\right )^{\frac{2}{3}} \log \left (x^{\frac{2}{3}} + x^{\frac{1}{3}} \left (-\frac{a}{b}\right )^{\frac{1}{3}} + \left (-\frac{a}{b}\right )^{\frac{2}{3}}\right )}{3 \, a b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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