Integrand size = 11, antiderivative size = 41 \[ \int \frac {x}{1-x^3} \, dx=-\frac {\arctan \left (\frac {1+2 x}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {1}{6} \log \left (\frac {(1-x)^2}{1+x+x^2}\right ) \]
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Time = 0.02 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.545, Rules used = {298, 31, 648, 632, 210, 642} \[ \int \frac {x}{1-x^3} \, dx=-\frac {\arctan \left (\frac {2 x+1}{\sqrt {3}}\right )}{\sqrt {3}}+\frac {1}{6} \log \left (x^2+x+1\right )-\frac {1}{3} \log (1-x) \]
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Rule 31
Rule 210
Rule 298
Rule 632
Rule 642
Rule 648
Rubi steps \begin{align*} \text {integral}& = \frac {1}{3} \int \frac {1}{1-x} \, dx-\frac {1}{3} \int \frac {1-x}{1+x+x^2} \, dx \\ & = -\frac {1}{3} \log (1-x)+\frac {1}{6} \int \frac {1+2 x}{1+x+x^2} \, dx-\frac {1}{2} \int \frac {1}{1+x+x^2} \, dx \\ & = -\frac {1}{3} \log (1-x)+\frac {1}{6} \log \left (1+x+x^2\right )+\text {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,1+2 x\right ) \\ & = -\frac {\arctan \left (\frac {1+2 x}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {1}{3} \log (1-x)+\frac {1}{6} \log \left (1+x+x^2\right ) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00 \[ \int \frac {x}{1-x^3} \, dx=-\frac {\arctan \left (\frac {1+2 x}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {1}{3} \log (1-x)+\frac {1}{6} \log \left (1+x+x^2\right ) \]
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Time = 0.08 (sec) , antiderivative size = 31, normalized size of antiderivative = 0.76
method | result | size |
risch | \(-\frac {\ln \left (-1+x \right )}{3}+\frac {\ln \left (x^{2}+x +1\right )}{6}-\frac {\sqrt {3}\, \arctan \left (\frac {2 \left (\frac {1}{2}+x \right ) \sqrt {3}}{3}\right )}{3}\) | \(31\) |
default | \(\frac {\ln \left (x^{2}+x +1\right )}{6}-\frac {\sqrt {3}\, \arctan \left (\frac {\left (1+2 x \right ) \sqrt {3}}{3}\right )}{3}-\frac {\ln \left (-1+x \right )}{3}\) | \(33\) |
meijerg | \(-\frac {x^{2} \left (\ln \left (1-\left (x^{3}\right )^{\frac {1}{3}}\right )-\frac {\ln \left (1+\left (x^{3}\right )^{\frac {1}{3}}+\left (x^{3}\right )^{\frac {2}{3}}\right )}{2}+\sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (x^{3}\right )^{\frac {1}{3}}}{2+\left (x^{3}\right )^{\frac {1}{3}}}\right )\right )}{3 \left (x^{3}\right )^{\frac {2}{3}}}\) | \(63\) |
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Time = 0.24 (sec) , antiderivative size = 32, normalized size of antiderivative = 0.78 \[ \int \frac {x}{1-x^3} \, dx=-\frac {1}{3} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) + \frac {1}{6} \, \log \left (x^{2} + x + 1\right ) - \frac {1}{3} \, \log \left (x - 1\right ) \]
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Time = 0.05 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00 \[ \int \frac {x}{1-x^3} \, dx=- \frac {\log {\left (x - 1 \right )}}{3} + \frac {\log {\left (x^{2} + x + 1 \right )}}{6} - \frac {\sqrt {3} \operatorname {atan}{\left (\frac {2 \sqrt {3} x}{3} + \frac {\sqrt {3}}{3} \right )}}{3} \]
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Time = 0.30 (sec) , antiderivative size = 32, normalized size of antiderivative = 0.78 \[ \int \frac {x}{1-x^3} \, dx=-\frac {1}{3} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) + \frac {1}{6} \, \log \left (x^{2} + x + 1\right ) - \frac {1}{3} \, \log \left (x - 1\right ) \]
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Time = 0.26 (sec) , antiderivative size = 33, normalized size of antiderivative = 0.80 \[ \int \frac {x}{1-x^3} \, dx=-\frac {1}{3} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) + \frac {1}{6} \, \log \left (x^{2} + x + 1\right ) - \frac {1}{3} \, \log \left ({\left | x - 1 \right |}\right ) \]
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Time = 15.19 (sec) , antiderivative size = 46, normalized size of antiderivative = 1.12 \[ \int \frac {x}{1-x^3} \, dx=-\frac {\ln \left (x-1\right )}{3}+\ln \left (x+\frac {1}{2}-\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (\frac {1}{6}+\frac {\sqrt {3}\,1{}\mathrm {i}}{6}\right )-\ln \left (x+\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (-\frac {1}{6}+\frac {\sqrt {3}\,1{}\mathrm {i}}{6}\right ) \]
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