Optimal. Leaf size=101 \[ \frac{3}{4} a^{2/3} \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x^2}\right )+\frac{1}{2} \sqrt{3} a^{2/3} \tan ^{-1}\left (\frac{2 \sqrt [3]{a+b x^2}+\sqrt [3]{a}}{\sqrt{3} \sqrt [3]{a}}\right )-\frac{1}{2} a^{2/3} \log (x)+\frac{3}{4} \left (a+b x^2\right )^{2/3} \]
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Rubi [A] time = 0.0664327, antiderivative size = 101, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 6, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.4, Rules used = {266, 50, 55, 617, 204, 31} \[ \frac{3}{4} a^{2/3} \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x^2}\right )+\frac{1}{2} \sqrt{3} a^{2/3} \tan ^{-1}\left (\frac{2 \sqrt [3]{a+b x^2}+\sqrt [3]{a}}{\sqrt{3} \sqrt [3]{a}}\right )-\frac{1}{2} a^{2/3} \log (x)+\frac{3}{4} \left (a+b x^2\right )^{2/3} \]
Antiderivative was successfully verified.
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Rule 266
Rule 50
Rule 55
Rule 617
Rule 204
Rule 31
Rubi steps
\begin{align*} \int \frac{\left (a+b x^2\right )^{2/3}}{x} \, dx &=\frac{1}{2} \operatorname{Subst}\left (\int \frac{(a+b x)^{2/3}}{x} \, dx,x,x^2\right )\\ &=\frac{3}{4} \left (a+b x^2\right )^{2/3}+\frac{1}{2} a \operatorname{Subst}\left (\int \frac{1}{x \sqrt [3]{a+b x}} \, dx,x,x^2\right )\\ &=\frac{3}{4} \left (a+b x^2\right )^{2/3}-\frac{1}{2} a^{2/3} \log (x)-\frac{1}{4} \left (3 a^{2/3}\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt [3]{a}-x} \, dx,x,\sqrt [3]{a+b x^2}\right )+\frac{1}{4} (3 a) \operatorname{Subst}\left (\int \frac{1}{a^{2/3}+\sqrt [3]{a} x+x^2} \, dx,x,\sqrt [3]{a+b x^2}\right )\\ &=\frac{3}{4} \left (a+b x^2\right )^{2/3}-\frac{1}{2} a^{2/3} \log (x)+\frac{3}{4} a^{2/3} \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x^2}\right )-\frac{1}{2} \left (3 a^{2/3}\right ) \operatorname{Subst}\left (\int \frac{1}{-3-x^2} \, dx,x,1+\frac{2 \sqrt [3]{a+b x^2}}{\sqrt [3]{a}}\right )\\ &=\frac{3}{4} \left (a+b x^2\right )^{2/3}+\frac{1}{2} \sqrt{3} a^{2/3} \tan ^{-1}\left (\frac{1+\frac{2 \sqrt [3]{a+b x^2}}{\sqrt [3]{a}}}{\sqrt{3}}\right )-\frac{1}{2} a^{2/3} \log (x)+\frac{3}{4} a^{2/3} \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x^2}\right )\\ \end{align*}
Mathematica [A] time = 0.0351165, size = 93, normalized size = 0.92 \[ \frac{1}{4} \left (3 \left (a^{2/3} \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x^2}\right )+\left (a+b x^2\right )^{2/3}\right )+2 \sqrt{3} a^{2/3} \tan ^{-1}\left (\frac{\frac{2 \sqrt [3]{a+b x^2}}{\sqrt [3]{a}}+1}{\sqrt{3}}\right )-2 a^{2/3} \log (x)\right ) \]
Antiderivative was successfully verified.
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Maple [F] time = 0.023, size = 0, normalized size = 0. \begin{align*} \int{\frac{1}{x} \left ( b{x}^{2}+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 = 1.8373, size = 358, normalized size = 3.54 \begin{align*} \frac{1}{2} \, \sqrt{3}{\left (a^{2}\right )}^{\frac{1}{3}} \arctan \left (\frac{\sqrt{3} a + 2 \, \sqrt{3}{\left (b x^{2} + a\right )}^{\frac{1}{3}}{\left (a^{2}\right )}^{\frac{1}{3}}}{3 \, a}\right ) - \frac{1}{4} \,{\left (a^{2}\right )}^{\frac{1}{3}} \log \left ({\left (b x^{2} + a\right )}^{\frac{2}{3}} a +{\left (a^{2}\right )}^{\frac{1}{3}} a +{\left (b x^{2} + a\right )}^{\frac{1}{3}}{\left (a^{2}\right )}^{\frac{2}{3}}\right ) + \frac{1}{2} \,{\left (a^{2}\right )}^{\frac{1}{3}} \log \left ({\left (b x^{2} + a\right )}^{\frac{1}{3}} a -{\left (a^{2}\right )}^{\frac{2}{3}}\right ) + \frac{3}{4} \,{\left (b x^{2} + a\right )}^{\frac{2}{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 1.11012, size = 46, normalized size = 0.46 \begin{align*} - \frac{b^{\frac{2}{3}} x^{\frac{4}{3}} \Gamma \left (- \frac{2}{3}\right ){{}_{2}F_{1}\left (\begin{matrix} - \frac{2}{3}, - \frac{2}{3} \\ \frac{1}{3} \end{matrix}\middle |{\frac{a e^{i \pi }}{b x^{2}}} \right )}}{2 \Gamma \left (\frac{1}{3}\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 4.26245, size = 132, normalized size = 1.31 \begin{align*} \frac{1}{2} \, \sqrt{3} a^{\frac{2}{3}} \arctan \left (\frac{\sqrt{3}{\left (2 \,{\left (b x^{2} + a\right )}^{\frac{1}{3}} + a^{\frac{1}{3}}\right )}}{3 \, a^{\frac{1}{3}}}\right ) - \frac{1}{4} \, a^{\frac{2}{3}} \log \left ({\left (b x^{2} + a\right )}^{\frac{2}{3}} +{\left (b x^{2} + a\right )}^{\frac{1}{3}} a^{\frac{1}{3}} + a^{\frac{2}{3}}\right ) + \frac{1}{2} \, a^{\frac{2}{3}} \log \left ({\left |{\left (b x^{2} + a\right )}^{\frac{1}{3}} - a^{\frac{1}{3}} \right |}\right ) + \frac{3}{4} \,{\left (b x^{2} + a\right )}^{\frac{2}{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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