Optimal. Leaf size=145 \[ -\frac{1}{8} \log \left (x^2-x+1\right )+\frac{1}{8} \log \left (x^2+x+1\right )-\frac{\log \left (x^2-\sqrt{3} x+1\right )}{8 \sqrt{3}}+\frac{\log \left (x^2+\sqrt{3} x+1\right )}{8 \sqrt{3}}-\frac{1}{x}+\frac{\tan ^{-1}\left (\frac{1-2 x}{\sqrt{3}}\right )}{4 \sqrt{3}}+\frac{1}{4} \tan ^{-1}\left (\sqrt{3}-2 x\right )-\frac{\tan ^{-1}\left (\frac{2 x+1}{\sqrt{3}}\right )}{4 \sqrt{3}}-\frac{1}{4} \tan ^{-1}\left (2 x+\sqrt{3}\right ) \]
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Rubi [A] time = 0.111633, antiderivative size = 145, normalized size of antiderivative = 1., number of steps used = 20, number of rules used = 8, integrand size = 14, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.571, Rules used = {1368, 1506, 1127, 1161, 618, 204, 1164, 628} \[ -\frac{1}{8} \log \left (x^2-x+1\right )+\frac{1}{8} \log \left (x^2+x+1\right )-\frac{\log \left (x^2-\sqrt{3} x+1\right )}{8 \sqrt{3}}+\frac{\log \left (x^2+\sqrt{3} x+1\right )}{8 \sqrt{3}}-\frac{1}{x}+\frac{\tan ^{-1}\left (\frac{1-2 x}{\sqrt{3}}\right )}{4 \sqrt{3}}+\frac{1}{4} \tan ^{-1}\left (\sqrt{3}-2 x\right )-\frac{\tan ^{-1}\left (\frac{2 x+1}{\sqrt{3}}\right )}{4 \sqrt{3}}-\frac{1}{4} \tan ^{-1}\left (2 x+\sqrt{3}\right ) \]
Antiderivative was successfully verified.
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Rule 1368
Rule 1506
Rule 1127
Rule 1161
Rule 618
Rule 204
Rule 1164
Rule 628
Rubi steps
\begin{align*} \int \frac{1}{x^2 \left (1+x^4+x^8\right )} \, dx &=-\frac{1}{x}+\int \frac{x^2 \left (-1-x^4\right )}{1+x^4+x^8} \, dx\\ &=-\frac{1}{x}-\frac{1}{2} \int \frac{x^2}{1-x^2+x^4} \, dx-\frac{1}{2} \int \frac{x^2}{1+x^2+x^4} \, dx\\ &=-\frac{1}{x}+\frac{1}{4} \int \frac{1-x^2}{1-x^2+x^4} \, dx-\frac{1}{4} \int \frac{1+x^2}{1-x^2+x^4} \, dx+\frac{1}{4} \int \frac{1-x^2}{1+x^2+x^4} \, dx-\frac{1}{4} \int \frac{1+x^2}{1+x^2+x^4} \, dx\\ &=-\frac{1}{x}-\frac{1}{8} \int \frac{1+2 x}{-1-x-x^2} \, dx-\frac{1}{8} \int \frac{1-2 x}{-1+x-x^2} \, dx-\frac{1}{8} \int \frac{1}{1-x+x^2} \, dx-\frac{1}{8} \int \frac{1}{1+x+x^2} \, dx-\frac{1}{8} \int \frac{1}{1-\sqrt{3} x+x^2} \, dx-\frac{1}{8} \int \frac{1}{1+\sqrt{3} x+x^2} \, dx-\frac{\int \frac{\sqrt{3}+2 x}{-1-\sqrt{3} x-x^2} \, dx}{8 \sqrt{3}}-\frac{\int \frac{\sqrt{3}-2 x}{-1+\sqrt{3} x-x^2} \, dx}{8 \sqrt{3}}\\ &=-\frac{1}{x}-\frac{1}{8} \log \left (1-x+x^2\right )+\frac{1}{8} \log \left (1+x+x^2\right )-\frac{\log \left (1-\sqrt{3} x+x^2\right )}{8 \sqrt{3}}+\frac{\log \left (1+\sqrt{3} x+x^2\right )}{8 \sqrt{3}}+\frac{1}{4} \operatorname{Subst}\left (\int \frac{1}{-3-x^2} \, dx,x,-1+2 x\right )+\frac{1}{4} \operatorname{Subst}\left (\int \frac{1}{-3-x^2} \, dx,x,1+2 x\right )+\frac{1}{4} \operatorname{Subst}\left (\int \frac{1}{-1-x^2} \, dx,x,-\sqrt{3}+2 x\right )+\frac{1}{4} \operatorname{Subst}\left (\int \frac{1}{-1-x^2} \, dx,x,\sqrt{3}+2 x\right )\\ &=-\frac{1}{x}+\frac{\tan ^{-1}\left (\frac{1-2 x}{\sqrt{3}}\right )}{4 \sqrt{3}}+\frac{1}{4} \tan ^{-1}\left (\sqrt{3}-2 x\right )-\frac{\tan ^{-1}\left (\frac{1+2 x}{\sqrt{3}}\right )}{4 \sqrt{3}}-\frac{1}{4} \tan ^{-1}\left (\sqrt{3}+2 x\right )-\frac{1}{8} \log \left (1-x+x^2\right )+\frac{1}{8} \log \left (1+x+x^2\right )-\frac{\log \left (1-\sqrt{3} x+x^2\right )}{8 \sqrt{3}}+\frac{\log \left (1+\sqrt{3} x+x^2\right )}{8 \sqrt{3}}\\ \end{align*}
Mathematica [C] time = 0.217175, size = 140, normalized size = 0.97 \[ \frac{1}{24} \left (-3 \log \left (x^2-x+1\right )+3 \log \left (x^2+x+1\right )-\frac{24}{x}+2 i \sqrt{-6+6 i \sqrt{3}} \tan ^{-1}\left (\frac{1}{2} \left (1-i \sqrt{3}\right ) x\right )-2 i \sqrt{-6-6 i \sqrt{3}} \tan ^{-1}\left (\frac{1}{2} \left (1+i \sqrt{3}\right ) x\right )-2 \sqrt{3} \tan ^{-1}\left (\frac{2 x-1}{\sqrt{3}}\right )-2 \sqrt{3} \tan ^{-1}\left (\frac{2 x+1}{\sqrt{3}}\right )\right ) \]
Warning: Unable to verify antiderivative.
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Maple [A] time = 0.01, size = 114, normalized size = 0.8 \begin{align*}{\frac{\ln \left ({x}^{2}+x+1 \right ) }{8}}-{\frac{\sqrt{3}}{12}\arctan \left ({\frac{ \left ( 1+2\,x \right ) \sqrt{3}}{3}} \right ) }-{\frac{\ln \left ({x}^{2}-x+1 \right ) }{8}}-{\frac{\sqrt{3}}{12}\arctan \left ({\frac{ \left ( 2\,x-1 \right ) \sqrt{3}}{3}} \right ) }+{\frac{\ln \left ( 1+{x}^{2}+x\sqrt{3} \right ) \sqrt{3}}{24}}-{\frac{\arctan \left ( 2\,x+\sqrt{3} \right ) }{4}}-{\frac{\ln \left ( 1+{x}^{2}-x\sqrt{3} \right ) \sqrt{3}}{24}}-{\frac{\arctan \left ( 2\,x-\sqrt{3} \right ) }{4}}-{x}^{-1} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} -\frac{1}{12} \, \sqrt{3} \arctan \left (\frac{1}{3} \, \sqrt{3}{\left (2 \, x + 1\right )}\right ) - \frac{1}{12} \, \sqrt{3} \arctan \left (\frac{1}{3} \, \sqrt{3}{\left (2 \, x - 1\right )}\right ) - \frac{1}{x} - \frac{1}{2} \, \int \frac{x^{2}}{x^{4} - x^{2} + 1}\,{d x} + \frac{1}{8} \, \log \left (x^{2} + x + 1\right ) - \frac{1}{8} \, \log \left (x^{2} - x + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.68442, size = 720, normalized size = 4.97 \begin{align*} \frac{4 \, \sqrt{6} \sqrt{3} \sqrt{2} x \arctan \left (-\frac{1}{3} \, \sqrt{6} \sqrt{3} \sqrt{2} x + \frac{1}{3} \, \sqrt{6} \sqrt{3} \sqrt{\sqrt{6} \sqrt{2} x + 2 \, x^{2} + 2} - \sqrt{3}\right ) + 4 \, \sqrt{6} \sqrt{3} \sqrt{2} x \arctan \left (-\frac{1}{3} \, \sqrt{6} \sqrt{3} \sqrt{2} x + \frac{1}{3} \, \sqrt{6} \sqrt{3} \sqrt{-\sqrt{6} \sqrt{2} x + 2 \, x^{2} + 2} + \sqrt{3}\right ) + \sqrt{6} \sqrt{2} x \log \left (\sqrt{6} \sqrt{2} x + 2 \, x^{2} + 2\right ) - \sqrt{6} \sqrt{2} x \log \left (-\sqrt{6} \sqrt{2} x + 2 \, x^{2} + 2\right ) - 4 \, \sqrt{3} x \arctan \left (\frac{1}{3} \, \sqrt{3}{\left (2 \, x + 1\right )}\right ) - 4 \, \sqrt{3} x \arctan \left (\frac{1}{3} \, \sqrt{3}{\left (2 \, x - 1\right )}\right ) + 6 \, x \log \left (x^{2} + x + 1\right ) - 6 \, x \log \left (x^{2} - x + 1\right ) - 48}{48 \, x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 0.722479, size = 218, normalized size = 1.5 \begin{align*} \left (- \frac{1}{8} - \frac{\sqrt{3} i}{24}\right ) \log{\left (x - 442368 \left (- \frac{1}{8} - \frac{\sqrt{3} i}{24}\right )^{7} - 384 \left (- \frac{1}{8} - \frac{\sqrt{3} i}{24}\right )^{3} \right )} + \left (- \frac{1}{8} + \frac{\sqrt{3} i}{24}\right ) \log{\left (x - 384 \left (- \frac{1}{8} + \frac{\sqrt{3} i}{24}\right )^{3} - 442368 \left (- \frac{1}{8} + \frac{\sqrt{3} i}{24}\right )^{7} \right )} + \left (\frac{1}{8} - \frac{\sqrt{3} i}{24}\right ) \log{\left (x - 442368 \left (\frac{1}{8} - \frac{\sqrt{3} i}{24}\right )^{7} - 384 \left (\frac{1}{8} - \frac{\sqrt{3} i}{24}\right )^{3} \right )} + \left (\frac{1}{8} + \frac{\sqrt{3} i}{24}\right ) \log{\left (x - 384 \left (\frac{1}{8} + \frac{\sqrt{3} i}{24}\right )^{3} - 442368 \left (\frac{1}{8} + \frac{\sqrt{3} i}{24}\right )^{7} \right )} + \operatorname{RootSum}{\left (2304 t^{4} + 48 t^{2} + 1, \left ( t \mapsto t \log{\left (- 442368 t^{7} - 384 t^{3} + x \right )} \right )\right )} - \frac{1}{x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{{\left (x^{8} + x^{4} + 1\right )} x^{2}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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