Optimal. Leaf size=152 \[ -\frac{\sqrt [3]{b} \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x^2+b^{2/3} x^4\right )}{9 a^{7/3}}+\frac{2 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} x^2\right )}{9 a^{7/3}}+\frac{2 \sqrt [3]{b} \tan ^{-1}\left (\frac{\sqrt [3]{a}-2 \sqrt [3]{b} x^2}{\sqrt{3} \sqrt [3]{a}}\right )}{3 \sqrt{3} a^{7/3}}-\frac{2}{3 a^2 x^2}+\frac{1}{6 a x^2 \left (a+b x^6\right )} \]
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Rubi [A] time = 0.129019, antiderivative size = 152, normalized size of antiderivative = 1., number of steps used = 9, number of rules used = 9, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.692, Rules used = {275, 290, 325, 292, 31, 634, 617, 204, 628} \[ -\frac{\sqrt [3]{b} \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x^2+b^{2/3} x^4\right )}{9 a^{7/3}}+\frac{2 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} x^2\right )}{9 a^{7/3}}+\frac{2 \sqrt [3]{b} \tan ^{-1}\left (\frac{\sqrt [3]{a}-2 \sqrt [3]{b} x^2}{\sqrt{3} \sqrt [3]{a}}\right )}{3 \sqrt{3} a^{7/3}}-\frac{2}{3 a^2 x^2}+\frac{1}{6 a x^2 \left (a+b x^6\right )} \]
Antiderivative was successfully verified.
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Rule 275
Rule 290
Rule 325
Rule 292
Rule 31
Rule 634
Rule 617
Rule 204
Rule 628
Rubi steps
\begin{align*} \int \frac{1}{x^3 \left (a+b x^6\right )^2} \, dx &=\frac{1}{2} \operatorname{Subst}\left (\int \frac{1}{x^2 \left (a+b x^3\right )^2} \, dx,x,x^2\right )\\ &=\frac{1}{6 a x^2 \left (a+b x^6\right )}+\frac{2 \operatorname{Subst}\left (\int \frac{1}{x^2 \left (a+b x^3\right )} \, dx,x,x^2\right )}{3 a}\\ &=-\frac{2}{3 a^2 x^2}+\frac{1}{6 a x^2 \left (a+b x^6\right )}-\frac{(2 b) \operatorname{Subst}\left (\int \frac{x}{a+b x^3} \, dx,x,x^2\right )}{3 a^2}\\ &=-\frac{2}{3 a^2 x^2}+\frac{1}{6 a x^2 \left (a+b x^6\right )}+\frac{\left (2 b^{2/3}\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt [3]{a}+\sqrt [3]{b} x} \, dx,x,x^2\right )}{9 a^{7/3}}-\frac{\left (2 b^{2/3}\right ) \operatorname{Subst}\left (\int \frac{\sqrt [3]{a}+\sqrt [3]{b} x}{a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2} \, dx,x,x^2\right )}{9 a^{7/3}}\\ &=-\frac{2}{3 a^2 x^2}+\frac{1}{6 a x^2 \left (a+b x^6\right )}+\frac{2 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} x^2\right )}{9 a^{7/3}}-\frac{\sqrt [3]{b} \operatorname{Subst}\left (\int \frac{-\sqrt [3]{a} \sqrt [3]{b}+2 b^{2/3} x}{a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2} \, dx,x,x^2\right )}{9 a^{7/3}}-\frac{b^{2/3} \operatorname{Subst}\left (\int \frac{1}{a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2} \, dx,x,x^2\right )}{3 a^2}\\ &=-\frac{2}{3 a^2 x^2}+\frac{1}{6 a x^2 \left (a+b x^6\right )}+\frac{2 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} x^2\right )}{9 a^{7/3}}-\frac{\sqrt [3]{b} \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x^2+b^{2/3} x^4\right )}{9 a^{7/3}}-\frac{\left (2 \sqrt [3]{b}\right ) \operatorname{Subst}\left (\int \frac{1}{-3-x^2} \, dx,x,1-\frac{2 \sqrt [3]{b} x^2}{\sqrt [3]{a}}\right )}{3 a^{7/3}}\\ &=-\frac{2}{3 a^2 x^2}+\frac{1}{6 a x^2 \left (a+b x^6\right )}+\frac{2 \sqrt [3]{b} \tan ^{-1}\left (\frac{\sqrt [3]{a}-2 \sqrt [3]{b} x^2}{\sqrt{3} \sqrt [3]{a}}\right )}{3 \sqrt{3} a^{7/3}}+\frac{2 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} x^2\right )}{9 a^{7/3}}-\frac{\sqrt [3]{b} \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x^2+b^{2/3} x^4\right )}{9 a^{7/3}}\\ \end{align*}
Mathematica [A] time = 0.137299, size = 208, normalized size = 1.37 \[ \frac{-\frac{3 \sqrt [3]{a} b x^4}{a+b x^6}+4 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} x^2\right )-2 \sqrt [3]{b} \log \left (-\sqrt{3} \sqrt [6]{a} \sqrt [6]{b} x+\sqrt [3]{a}+\sqrt [3]{b} x^2\right )-2 \sqrt [3]{b} \log \left (\sqrt{3} \sqrt [6]{a} \sqrt [6]{b} x+\sqrt [3]{a}+\sqrt [3]{b} x^2\right )+4 \sqrt{3} \sqrt [3]{b} \tan ^{-1}\left (\sqrt{3}-\frac{2 \sqrt [6]{b} x}{\sqrt [6]{a}}\right )+4 \sqrt{3} \sqrt [3]{b} \tan ^{-1}\left (\frac{2 \sqrt [6]{b} x}{\sqrt [6]{a}}+\sqrt{3}\right )-\frac{9 \sqrt [3]{a}}{x^2}}{18 a^{7/3}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.011, size = 123, normalized size = 0.8 \begin{align*} -{\frac{1}{2\,{a}^{2}{x}^{2}}}-{\frac{b{x}^{4}}{6\,{a}^{2} \left ( b{x}^{6}+a \right ) }}+{\frac{2}{9\,{a}^{2}}\ln \left ({x}^{2}+\sqrt [3]{{\frac{a}{b}}} \right ){\frac{1}{\sqrt [3]{{\frac{a}{b}}}}}}-{\frac{1}{9\,{a}^{2}}\ln \left ({x}^{4}-\sqrt [3]{{\frac{a}{b}}}{x}^{2}+ \left ({\frac{a}{b}} \right ) ^{{\frac{2}{3}}} \right ){\frac{1}{\sqrt [3]{{\frac{a}{b}}}}}}-{\frac{2\,\sqrt{3}}{9\,{a}^{2}}\arctan \left ({\frac{\sqrt{3}}{3} \left ( 2\,{{x}^{2}{\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 [A] time = 1.4986, size = 370, normalized size = 2.43 \begin{align*} -\frac{12 \, b x^{6} + 4 \, \sqrt{3}{\left (b x^{8} + a x^{2}\right )} \left (\frac{b}{a}\right )^{\frac{1}{3}} \arctan \left (\frac{2}{3} \, \sqrt{3} x^{2} \left (\frac{b}{a}\right )^{\frac{1}{3}} - \frac{1}{3} \, \sqrt{3}\right ) + 2 \,{\left (b x^{8} + a x^{2}\right )} \left (\frac{b}{a}\right )^{\frac{1}{3}} \log \left (b x^{4} - a x^{2} \left (\frac{b}{a}\right )^{\frac{2}{3}} + a \left (\frac{b}{a}\right )^{\frac{1}{3}}\right ) - 4 \,{\left (b x^{8} + a x^{2}\right )} \left (\frac{b}{a}\right )^{\frac{1}{3}} \log \left (b x^{2} + a \left (\frac{b}{a}\right )^{\frac{2}{3}}\right ) + 9 \, a}{18 \,{\left (a^{2} b x^{8} + a^{3} x^{2}\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 4.13859, size = 58, normalized size = 0.38 \begin{align*} - \frac{3 a + 4 b x^{6}}{6 a^{3} x^{2} + 6 a^{2} b x^{8}} + \operatorname{RootSum}{\left (729 t^{3} a^{7} - 8 b, \left ( t \mapsto t \log{\left (\frac{81 t^{2} a^{5}}{4 b} + x^{2} \right )} \right )\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.22677, size = 198, normalized size = 1.3 \begin{align*} \frac{2 \, b \left (-\frac{a}{b}\right )^{\frac{2}{3}} \log \left ({\left | x^{2} - \left (-\frac{a}{b}\right )^{\frac{1}{3}} \right |}\right )}{9 \, a^{3}} + \frac{2 \, \sqrt{3} \left (-a b^{2}\right )^{\frac{2}{3}} \arctan \left (\frac{\sqrt{3}{\left (2 \, x^{2} + \left (-\frac{a}{b}\right )^{\frac{1}{3}}\right )}}{3 \, \left (-\frac{a}{b}\right )^{\frac{1}{3}}}\right )}{9 \, a^{3} b} - \frac{4 \, b x^{6} + 3 \, a}{6 \,{\left (b x^{8} + a x^{2}\right )} a^{2}} - \frac{\left (-a b^{2}\right )^{\frac{2}{3}} \log \left (x^{4} + x^{2} \left (-\frac{a}{b}\right )^{\frac{1}{3}} + \left (-\frac{a}{b}\right )^{\frac{2}{3}}\right )}{9 \, a^{3} b} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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