Optimal. Leaf size=74 \[ \frac{3 \log \left (a-\sqrt [3]{a^3-b^3 x}\right )}{2 a^2}-\frac{\sqrt{3} \tan ^{-1}\left (\frac{2 \sqrt [3]{a^3-b^3 x}+a}{\sqrt{3} a}\right )}{a^2}-\frac{\log (x)}{2 a^2} \]
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Rubi [A] time = 0.0248979, antiderivative size = 74, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 18, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.222, Rules used = {57, 617, 204, 31} \[ \frac{3 \log \left (a-\sqrt [3]{a^3-b^3 x}\right )}{2 a^2}-\frac{\sqrt{3} \tan ^{-1}\left (\frac{2 \sqrt [3]{a^3-b^3 x}+a}{\sqrt{3} a}\right )}{a^2}-\frac{\log (x)}{2 a^2} \]
Antiderivative was successfully verified.
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Rule 57
Rule 617
Rule 204
Rule 31
Rubi steps
\begin{align*} \int \frac{1}{x \left (a^3-b^3 x\right )^{2/3}} \, dx &=-\frac{\log (x)}{2 a^2}-\frac{3 \operatorname{Subst}\left (\int \frac{1}{a-x} \, dx,x,\sqrt [3]{a^3-b^3 x}\right )}{2 a^2}-\frac{3 \operatorname{Subst}\left (\int \frac{1}{a^2+a x+x^2} \, dx,x,\sqrt [3]{a^3-b^3 x}\right )}{2 a}\\ &=-\frac{\log (x)}{2 a^2}+\frac{3 \log \left (a-\sqrt [3]{a^3-b^3 x}\right )}{2 a^2}+\frac{3 \operatorname{Subst}\left (\int \frac{1}{-3-x^2} \, dx,x,1+\frac{2 \sqrt [3]{a^3-b^3 x}}{a}\right )}{a^2}\\ &=-\frac{\sqrt{3} \tan ^{-1}\left (\frac{1+\frac{2 \sqrt [3]{a^3-b^3 x}}{a}}{\sqrt{3}}\right )}{a^2}-\frac{\log (x)}{2 a^2}+\frac{3 \log \left (a-\sqrt [3]{a^3-b^3 x}\right )}{2 a^2}\\ \end{align*}
Mathematica [A] time = 0.0979139, size = 99, normalized size = 1.34 \[ -\frac{-2 \log \left (a-\sqrt [3]{a^3-b^3 x}\right )+\log \left (a \sqrt [3]{a^3-b^3 x}+\left (a^3-b^3 x\right )^{2/3}+a^2\right )+2 \sqrt{3} \tan ^{-1}\left (\frac{2 \sqrt [3]{a^3-b^3 x}+a}{\sqrt{3} a}\right )}{2 a^2} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.004, size = 92, normalized size = 1.2 \begin{align*}{\frac{1}{{a}^{2}}\ln \left ( -a+\sqrt [3]{-{b}^{3}x+{a}^{3}} \right ) }-{\frac{1}{2\,{a}^{2}}\ln \left ( \left ( -{b}^{3}x+{a}^{3} \right ) ^{{\frac{2}{3}}}+a\sqrt [3]{-{b}^{3}x+{a}^{3}}+{a}^{2} \right ) }-{\frac{\sqrt{3}}{{a}^{2}}\arctan \left ({\frac{\sqrt{3}}{3\,a} \left ( a+2\,\sqrt [3]{-{b}^{3}x+{a}^{3}} \right ) } \right ) } \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.52431, size = 123, normalized size = 1.66 \begin{align*} -\frac{\sqrt{3} \arctan \left (\frac{\sqrt{3}{\left (a + 2 \,{\left (-b^{3} x + a^{3}\right )}^{\frac{1}{3}}\right )}}{3 \, a}\right )}{a^{2}} - \frac{\log \left (a^{2} +{\left (-b^{3} x + a^{3}\right )}^{\frac{1}{3}} a +{\left (-b^{3} x + a^{3}\right )}^{\frac{2}{3}}\right )}{2 \, a^{2}} + \frac{\log \left (-a +{\left (-b^{3} x + a^{3}\right )}^{\frac{1}{3}}\right )}{a^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.60652, size = 236, normalized size = 3.19 \begin{align*} -\frac{2 \, \sqrt{3} \arctan \left (\frac{\sqrt{3} a + 2 \, \sqrt{3}{\left (-b^{3} x + a^{3}\right )}^{\frac{1}{3}}}{3 \, a}\right ) + \log \left (a^{2} +{\left (-b^{3} x + a^{3}\right )}^{\frac{1}{3}} a +{\left (-b^{3} x + a^{3}\right )}^{\frac{2}{3}}\right ) - 2 \, \log \left (-a +{\left (-b^{3} x + a^{3}\right )}^{\frac{1}{3}}\right )}{2 \, a^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 2.6476, size = 136, normalized size = 1.84 \begin{align*} \frac{\log{\left (1 - \frac{b \sqrt [3]{- \frac{a^{3}}{b^{3}} + x} e^{\frac{i \pi }{3}}}{a} \right )} \Gamma \left (\frac{1}{3}\right )}{3 a^{2} \Gamma \left (\frac{4}{3}\right )} - \frac{e^{\frac{i \pi }{3}} \log{\left (1 - \frac{b \sqrt [3]{- \frac{a^{3}}{b^{3}} + x} e^{i \pi }}{a} \right )} \Gamma \left (\frac{1}{3}\right )}{3 a^{2} \Gamma \left (\frac{4}{3}\right )} + \frac{e^{\frac{2 i \pi }{3}} \log{\left (1 - \frac{b \sqrt [3]{- \frac{a^{3}}{b^{3}} + x} e^{\frac{5 i \pi }{3}}}{a} \right )} \Gamma \left (\frac{1}{3}\right )}{3 a^{2} \Gamma \left (\frac{4}{3}\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.26415, size = 124, normalized size = 1.68 \begin{align*} -\frac{\sqrt{3} \arctan \left (\frac{\sqrt{3}{\left (a + 2 \,{\left (-b^{3} x + a^{3}\right )}^{\frac{1}{3}}\right )}}{3 \, a}\right )}{a^{2}} - \frac{\log \left (a^{2} +{\left (-b^{3} x + a^{3}\right )}^{\frac{1}{3}} a +{\left (-b^{3} x + a^{3}\right )}^{\frac{2}{3}}\right )}{2 \, a^{2}} + \frac{\log \left ({\left | -a +{\left (-b^{3} x + a^{3}\right )}^{\frac{1}{3}} \right |}\right )}{a^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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