Integrand size = 16, antiderivative size = 64 \[ \int \frac {1+x^2}{x \left (1+x^3\right )^2} \, dx=\frac {x \left (x-x^2\right )}{3 \left (1+x^3\right )}-\frac {\arctan \left (\frac {1-2 x}{\sqrt {3}}\right )}{3 \sqrt {3}}+\log (x)-\frac {4}{9} \log (1+x)-\frac {5}{18} \log \left (1-x+x^2\right ) \]
[Out]
Time = 0.06 (sec) , antiderivative size = 64, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.375, Rules used = {1843, 1848, 648, 632, 210, 642} \[ \int \frac {1+x^2}{x \left (1+x^3\right )^2} \, dx=-\frac {\arctan \left (\frac {1-2 x}{\sqrt {3}}\right )}{3 \sqrt {3}}-\frac {5}{18} \log \left (x^2-x+1\right )+\frac {x \left (x-x^2\right )}{3 \left (x^3+1\right )}+\log (x)-\frac {4}{9} \log (x+1) \]
[In]
[Out]
Rule 210
Rule 632
Rule 642
Rule 648
Rule 1843
Rule 1848
Rubi steps \begin{align*} \text {integral}& = \frac {x \left (x-x^2\right )}{3 \left (1+x^3\right )}-\frac {1}{3} \int \frac {-3-x^2}{x \left (1+x^3\right )} \, dx \\ & = \frac {x \left (x-x^2\right )}{3 \left (1+x^3\right )}-\frac {1}{3} \int \left (-\frac {3}{x}+\frac {4}{3 (1+x)}+\frac {-4+5 x}{3 \left (1-x+x^2\right )}\right ) \, dx \\ & = \frac {x \left (x-x^2\right )}{3 \left (1+x^3\right )}+\log (x)-\frac {4}{9} \log (1+x)-\frac {1}{9} \int \frac {-4+5 x}{1-x+x^2} \, dx \\ & = \frac {x \left (x-x^2\right )}{3 \left (1+x^3\right )}+\log (x)-\frac {4}{9} \log (1+x)+\frac {1}{6} \int \frac {1}{1-x+x^2} \, dx-\frac {5}{18} \int \frac {-1+2 x}{1-x+x^2} \, dx \\ & = \frac {x \left (x-x^2\right )}{3 \left (1+x^3\right )}+\log (x)-\frac {4}{9} \log (1+x)-\frac {5}{18} \log \left (1-x+x^2\right )-\frac {1}{3} \text {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,-1+2 x\right ) \\ & = \frac {x \left (x-x^2\right )}{3 \left (1+x^3\right )}-\frac {\arctan \left (\frac {1-2 x}{\sqrt {3}}\right )}{3 \sqrt {3}}+\log (x)-\frac {4}{9} \log (1+x)-\frac {5}{18} \log \left (1-x+x^2\right ) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 65, normalized size of antiderivative = 1.02 \[ \int \frac {1+x^2}{x \left (1+x^3\right )^2} \, dx=\frac {1}{18} \left (\frac {6 \left (1+x^2\right )}{1+x^3}+2 \sqrt {3} \arctan \left (\frac {-1+2 x}{\sqrt {3}}\right )+18 \log (x)-2 \log (1+x)+\log \left (1-x+x^2\right )-6 \log \left (1+x^3\right )\right ) \]
[In]
[Out]
Time = 0.22 (sec) , antiderivative size = 50, normalized size of antiderivative = 0.78
method | result | size |
risch | \(\frac {\frac {x^{2}}{3}+\frac {1}{3}}{x^{3}+1}+\ln \left (x \right )-\frac {4 \ln \left (1+x \right )}{9}-\frac {5 \ln \left (x^{2}-x +1\right )}{18}+\frac {\sqrt {3}\, \arctan \left (\frac {2 \left (x -\frac {1}{2}\right ) \sqrt {3}}{3}\right )}{9}\) | \(50\) |
default | \(-\frac {-1-x}{9 \left (x^{2}-x +1\right )}-\frac {5 \ln \left (x^{2}-x +1\right )}{18}+\frac {\sqrt {3}\, \arctan \left (\frac {\left (2 x -1\right ) \sqrt {3}}{3}\right )}{9}+\ln \left (x \right )+\frac {2}{9 \left (1+x \right )}-\frac {4 \ln \left (1+x \right )}{9}\) | \(61\) |
meijerg | \(\frac {x^{2}}{3 x^{3}+3}-\frac {x^{2} \ln \left (1+\left (x^{3}\right )^{\frac {1}{3}}\right )}{9 \left (x^{3}\right )^{\frac {2}{3}}}+\frac {x^{2} \ln \left (1-\left (x^{3}\right )^{\frac {1}{3}}+\left (x^{3}\right )^{\frac {2}{3}}\right )}{18 \left (x^{3}\right )^{\frac {2}{3}}}+\frac {x^{2} \sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (x^{3}\right )^{\frac {1}{3}}}{2-\left (x^{3}\right )^{\frac {1}{3}}}\right )}{9 \left (x^{3}\right )^{\frac {2}{3}}}+\frac {1}{3}+\ln \left (x \right )-\frac {2 x^{3}}{3 \left (2 x^{3}+2\right )}-\frac {\ln \left (x^{3}+1\right )}{3}\) | \(118\) |
[In]
[Out]
none
Time = 0.24 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.14 \[ \int \frac {1+x^2}{x \left (1+x^3\right )^2} \, dx=\frac {2 \, \sqrt {3} {\left (x^{3} + 1\right )} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x - 1\right )}\right ) + 6 \, x^{2} - 5 \, {\left (x^{3} + 1\right )} \log \left (x^{2} - x + 1\right ) - 8 \, {\left (x^{3} + 1\right )} \log \left (x + 1\right ) + 18 \, {\left (x^{3} + 1\right )} \log \left (x\right ) + 6}{18 \, {\left (x^{3} + 1\right )}} \]
[In]
[Out]
Time = 0.10 (sec) , antiderivative size = 60, normalized size of antiderivative = 0.94 \[ \int \frac {1+x^2}{x \left (1+x^3\right )^2} \, dx=\frac {x^{2} + 1}{3 x^{3} + 3} + \log {\left (x \right )} - \frac {4 \log {\left (x + 1 \right )}}{9} - \frac {5 \log {\left (x^{2} - x + 1 \right )}}{18} + \frac {\sqrt {3} \operatorname {atan}{\left (\frac {2 \sqrt {3} x}{3} - \frac {\sqrt {3}}{3} \right )}}{9} \]
[In]
[Out]
none
Time = 0.30 (sec) , antiderivative size = 50, normalized size of antiderivative = 0.78 \[ \int \frac {1+x^2}{x \left (1+x^3\right )^2} \, dx=\frac {1}{9} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x - 1\right )}\right ) + \frac {x^{2} + 1}{3 \, {\left (x^{3} + 1\right )}} - \frac {5}{18} \, \log \left (x^{2} - x + 1\right ) - \frac {4}{9} \, \log \left (x + 1\right ) + \log \left (x\right ) \]
[In]
[Out]
none
Time = 0.31 (sec) , antiderivative size = 60, normalized size of antiderivative = 0.94 \[ \int \frac {1+x^2}{x \left (1+x^3\right )^2} \, dx=\frac {1}{9} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x - 1\right )}\right ) + \frac {x^{2} + 1}{3 \, {\left (x^{2} - x + 1\right )} {\left (x + 1\right )}} - \frac {5}{18} \, \log \left (x^{2} - x + 1\right ) - \frac {4}{9} \, \log \left ({\left | x + 1 \right |}\right ) + \log \left ({\left | x \right |}\right ) \]
[In]
[Out]
Time = 0.11 (sec) , antiderivative size = 63, normalized size of antiderivative = 0.98 \[ \int \frac {1+x^2}{x \left (1+x^3\right )^2} \, dx=\ln \left (x\right )-\frac {4\,\ln \left (x+1\right )}{9}-\ln \left (x-\frac {1}{2}-\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (\frac {5}{18}+\frac {\sqrt {3}\,1{}\mathrm {i}}{18}\right )+\ln \left (x-\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (-\frac {5}{18}+\frac {\sqrt {3}\,1{}\mathrm {i}}{18}\right )+\frac {\frac {x^2}{3}+\frac {1}{3}}{x^3+1} \]
[In]
[Out]