Optimal. Leaf size=112 \[ -\frac{1}{12} \log \left (x^2-x+1\right )+\frac{\log \left (x^2-\sqrt [3]{3} x+3^{2/3}\right )}{4 \sqrt [3]{3}}+\frac{1}{6} \log (x+1)-\frac{\log \left (x+\sqrt [3]{3}\right )}{2 \sqrt [3]{3}}+\frac{\tan ^{-1}\left (\frac{1-2 x}{\sqrt{3}}\right )}{2 \sqrt{3}}-\frac{1}{2} \sqrt [6]{3} \tan ^{-1}\left (\frac{\sqrt [3]{3}-2 x}{3^{5/6}}\right ) \]
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Rubi [A] time = 0.0680056, antiderivative size = 112, normalized size of antiderivative = 1., number of steps used = 13, number of rules used = 8, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.5, Rules used = {1374, 292, 31, 634, 617, 204, 628, 618} \[ -\frac{1}{12} \log \left (x^2-x+1\right )+\frac{\log \left (x^2-\sqrt [3]{3} x+3^{2/3}\right )}{4 \sqrt [3]{3}}+\frac{1}{6} \log (x+1)-\frac{\log \left (x+\sqrt [3]{3}\right )}{2 \sqrt [3]{3}}+\frac{\tan ^{-1}\left (\frac{1-2 x}{\sqrt{3}}\right )}{2 \sqrt{3}}-\frac{1}{2} \sqrt [6]{3} \tan ^{-1}\left (\frac{\sqrt [3]{3}-2 x}{3^{5/6}}\right ) \]
Antiderivative was successfully verified.
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Rule 1374
Rule 292
Rule 31
Rule 634
Rule 617
Rule 204
Rule 628
Rule 618
Rubi steps
\begin{align*} \int \frac{x^4}{3+4 x^3+x^6} \, dx &=-\left (\frac{1}{2} \int \frac{x}{1+x^3} \, dx\right )+\frac{3}{2} \int \frac{x}{3+x^3} \, dx\\ &=\frac{1}{6} \int \frac{1}{1+x} \, dx-\frac{1}{6} \int \frac{1+x}{1-x+x^2} \, dx-\frac{\int \frac{1}{\sqrt [3]{3}+x} \, dx}{2 \sqrt [3]{3}}+\frac{\int \frac{\sqrt [3]{3}+x}{3^{2/3}-\sqrt [3]{3} x+x^2} \, dx}{2 \sqrt [3]{3}}\\ &=\frac{1}{6} \log (1+x)-\frac{\log \left (\sqrt [3]{3}+x\right )}{2 \sqrt [3]{3}}-\frac{1}{12} \int \frac{-1+2 x}{1-x+x^2} \, dx-\frac{1}{4} \int \frac{1}{1-x+x^2} \, dx+\frac{3}{4} \int \frac{1}{3^{2/3}-\sqrt [3]{3} x+x^2} \, dx+\frac{\int \frac{-\sqrt [3]{3}+2 x}{3^{2/3}-\sqrt [3]{3} x+x^2} \, dx}{4 \sqrt [3]{3}}\\ &=\frac{1}{6} \log (1+x)-\frac{\log \left (\sqrt [3]{3}+x\right )}{2 \sqrt [3]{3}}-\frac{1}{12} \log \left (1-x+x^2\right )+\frac{\log \left (3^{2/3}-\sqrt [3]{3} x+x^2\right )}{4 \sqrt [3]{3}}+\frac{1}{2} \operatorname{Subst}\left (\int \frac{1}{-3-x^2} \, dx,x,-1+2 x\right )+\frac{1}{2} 3^{2/3} \operatorname{Subst}\left (\int \frac{1}{-3-x^2} \, dx,x,1-\frac{2 x}{\sqrt [3]{3}}\right )\\ &=\frac{\tan ^{-1}\left (\frac{1-2 x}{\sqrt{3}}\right )}{2 \sqrt{3}}-\frac{1}{2} \sqrt [6]{3} \tan ^{-1}\left (\frac{\sqrt [3]{3}-2 x}{3^{5/6}}\right )+\frac{1}{6} \log (1+x)-\frac{\log \left (\sqrt [3]{3}+x\right )}{2 \sqrt [3]{3}}-\frac{1}{12} \log \left (1-x+x^2\right )+\frac{\log \left (3^{2/3}-\sqrt [3]{3} x+x^2\right )}{4 \sqrt [3]{3}}\\ \end{align*}
Mathematica [A] time = 0.0377344, size = 107, normalized size = 0.96 \[ \frac{1}{12} \left (-\log \left (x^2-x+1\right )+3^{2/3} \log \left (\sqrt [3]{3} x^2-3^{2/3} x+3\right )+2 \log (x+1)-2\ 3^{2/3} \log \left (3^{2/3} x+3\right )-6 \sqrt [6]{3} \tan ^{-1}\left (\frac{\sqrt [3]{3}-2 x}{3^{5/6}}\right )-2 \sqrt{3} \tan ^{-1}\left (\frac{2 x-1}{\sqrt{3}}\right )\right ) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.007, size = 84, normalized size = 0.8 \begin{align*} -{\frac{\ln \left ({x}^{2}-x+1 \right ) }{12}}-{\frac{\sqrt{3}}{6}\arctan \left ({\frac{ \left ( 2\,x-1 \right ) \sqrt{3}}{3}} \right ) }-{\frac{{3}^{{\frac{2}{3}}}\ln \left ( \sqrt [3]{3}+x \right ) }{6}}+{\frac{{3}^{{\frac{2}{3}}}\ln \left ({3}^{{\frac{2}{3}}}-\sqrt [3]{3}x+{x}^{2} \right ) }{12}}+{\frac{\sqrt [6]{3}}{2}\arctan \left ({\frac{\sqrt{3}}{3} \left ({\frac{2\,{3}^{2/3}x}{3}}-1 \right ) } \right ) }+{\frac{\ln \left ( 1+x \right ) }{6}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.62697, size = 113, normalized size = 1.01 \begin{align*} \frac{1}{12} \cdot 3^{\frac{2}{3}} \log \left (x^{2} - 3^{\frac{1}{3}} x + 3^{\frac{2}{3}}\right ) - \frac{1}{6} \cdot 3^{\frac{2}{3}} \log \left (x + 3^{\frac{1}{3}}\right ) - \frac{1}{6} \, \sqrt{3} \arctan \left (\frac{1}{3} \, \sqrt{3}{\left (2 \, x - 1\right )}\right ) + \frac{1}{2} \cdot 3^{\frac{1}{6}} \arctan \left (\frac{1}{3} \cdot 3^{\frac{1}{6}}{\left (2 \, x - 3^{\frac{1}{3}}\right )}\right ) - \frac{1}{12} \, \log \left (x^{2} - x + 1\right ) + \frac{1}{6} \, \log \left (x + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.51484, size = 392, normalized size = 3.5 \begin{align*} -\frac{1}{12} \cdot 3^{\frac{2}{3}} \left (-1\right )^{\frac{1}{3}} \log \left (-3^{\frac{1}{3}} \left (-1\right )^{\frac{2}{3}} x + x^{2} - 3^{\frac{2}{3}} \left (-1\right )^{\frac{1}{3}}\right ) + \frac{1}{6} \cdot 3^{\frac{2}{3}} \left (-1\right )^{\frac{1}{3}} \log \left (3^{\frac{1}{3}} \left (-1\right )^{\frac{2}{3}} + x\right ) - \frac{1}{6} \, \sqrt{3} \arctan \left (\frac{1}{3} \, \sqrt{3}{\left (2 \, x - 1\right )}\right ) + \frac{1}{2} \cdot 3^{\frac{1}{6}} \left (-1\right )^{\frac{1}{3}} \arctan \left (\frac{1}{3} \cdot 3^{\frac{1}{6}}{\left (2 \, \left (-1\right )^{\frac{1}{3}} x + 3^{\frac{1}{3}}\right )}\right ) - \frac{1}{12} \, \log \left (x^{2} - x + 1\right ) + \frac{1}{6} \, \log \left (x + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 0.619713, size = 134, normalized size = 1.2 \begin{align*} \frac{\log{\left (x + 1 \right )}}{6} + \left (- \frac{1}{12} - \frac{\sqrt{3} i}{12}\right ) \log{\left (x + \frac{2592 \left (- \frac{1}{12} - \frac{\sqrt{3} i}{12}\right )^{5}}{5} + \frac{168 \left (- \frac{1}{12} - \frac{\sqrt{3} i}{12}\right )^{2}}{5} \right )} + \left (- \frac{1}{12} + \frac{\sqrt{3} i}{12}\right ) \log{\left (x + \frac{168 \left (- \frac{1}{12} + \frac{\sqrt{3} i}{12}\right )^{2}}{5} + \frac{2592 \left (- \frac{1}{12} + \frac{\sqrt{3} i}{12}\right )^{5}}{5} \right )} + \operatorname{RootSum}{\left (24 t^{3} + 1, \left ( t \mapsto t \log{\left (\frac{2592 t^{5}}{5} + \frac{168 t^{2}}{5} + x \right )} \right )\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: NotImplementedError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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