Optimal. Leaf size=49 \[ -\frac {1}{6} \log \left (x^2+1\right )-\frac {\tan ^{-1}\left (\frac {1-2 x^2}{\sqrt {3}}\right )}{2 \sqrt {3}}+\frac {1}{12} \log \left (x^4-x^2+1\right ) \]
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Rubi [A] time = 0.04, antiderivative size = 49, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 7, integrand size = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.636, Rules used = {275, 292, 31, 634, 618, 204, 628} \[ -\frac {1}{6} \log \left (x^2+1\right )+\frac {1}{12} \log \left (x^4-x^2+1\right )-\frac {\tan ^{-1}\left (\frac {1-2 x^2}{\sqrt {3}}\right )}{2 \sqrt {3}} \]
Antiderivative was successfully verified.
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Rule 31
Rule 204
Rule 275
Rule 292
Rule 618
Rule 628
Rule 634
Rubi steps
\begin {align*} \int \frac {x^3}{1+x^6} \, dx &=\frac {1}{2} \operatorname {Subst}\left (\int \frac {x}{1+x^3} \, dx,x,x^2\right )\\ &=-\left (\frac {1}{6} \operatorname {Subst}\left (\int \frac {1}{1+x} \, dx,x,x^2\right )\right )+\frac {1}{6} \operatorname {Subst}\left (\int \frac {1+x}{1-x+x^2} \, dx,x,x^2\right )\\ &=-\frac {1}{6} \log \left (1+x^2\right )+\frac {1}{12} \operatorname {Subst}\left (\int \frac {-1+2 x}{1-x+x^2} \, dx,x,x^2\right )+\frac {1}{4} \operatorname {Subst}\left (\int \frac {1}{1-x+x^2} \, dx,x,x^2\right )\\ &=-\frac {1}{6} \log \left (1+x^2\right )+\frac {1}{12} \log \left (1-x^2+x^4\right )-\frac {1}{2} \operatorname {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,-1+2 x^2\right )\\ &=-\frac {\tan ^{-1}\left (\frac {1-2 x^2}{\sqrt {3}}\right )}{2 \sqrt {3}}-\frac {1}{6} \log \left (1+x^2\right )+\frac {1}{12} \log \left (1-x^2+x^4\right )\\ \end {align*}
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Mathematica [A] time = 0.01, size = 74, normalized size = 1.51 \[ \frac {1}{12} \left (-2 \log \left (x^2+1\right )+\log \left (x^2-\sqrt {3} x+1\right )+\log \left (x^2+\sqrt {3} x+1\right )-2 \sqrt {3} \tan ^{-1}\left (\sqrt {3}-2 x\right )-2 \sqrt {3} \tan ^{-1}\left (2 x+\sqrt {3}\right )\right ) \]
Antiderivative was successfully verified.
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fricas [A] time = 0.87, size = 40, normalized size = 0.82 \[ \frac {1}{6} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x^{2} - 1\right )}\right ) + \frac {1}{12} \, \log \left (x^{4} - x^{2} + 1\right ) - \frac {1}{6} \, \log \left (x^{2} + 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.15, size = 40, normalized size = 0.82 \[ \frac {1}{6} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x^{2} - 1\right )}\right ) + \frac {1}{12} \, \log \left (x^{4} - x^{2} + 1\right ) - \frac {1}{6} \, \log \left (x^{2} + 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 41, normalized size = 0.84 \[ \frac {\sqrt {3}\, \arctan \left (\frac {\left (2 x^{2}-1\right ) \sqrt {3}}{3}\right )}{6}-\frac {\ln \left (x^{2}+1\right )}{6}+\frac {\ln \left (x^{4}-x^{2}+1\right )}{12} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 2.37, size = 40, normalized size = 0.82 \[ \frac {1}{6} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x^{2} - 1\right )}\right ) + \frac {1}{12} \, \log \left (x^{4} - x^{2} + 1\right ) - \frac {1}{6} \, \log \left (x^{2} + 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.12, size = 52, normalized size = 1.06 \[ -\frac {\ln \left (x^2+1\right )}{6}-\ln \left (x^2-\frac {\sqrt {3}\,1{}\mathrm {i}}{2}-\frac {1}{2}\right )\,\left (-\frac {1}{12}+\frac {\sqrt {3}\,1{}\mathrm {i}}{12}\right )+\ln \left (x^2+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}-\frac {1}{2}\right )\,\left (\frac {1}{12}+\frac {\sqrt {3}\,1{}\mathrm {i}}{12}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.17, size = 46, normalized size = 0.94 \[ - \frac {\log {\left (x^{2} + 1 \right )}}{6} + \frac {\log {\left (x^{4} - x^{2} + 1 \right )}}{12} + \frac {\sqrt {3} \operatorname {atan}{\left (\frac {2 \sqrt {3} x^{2}}{3} - \frac {\sqrt {3}}{3} \right )}}{6} \]
Verification of antiderivative is not currently implemented for this CAS.
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