Integrand size = 25, antiderivative size = 80 \[ \int \frac {-3+x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx=\sqrt {3} \arctan \left (\frac {\sqrt {3} \sqrt [3]{-1+x^2}}{-2 x+\sqrt [3]{-1+x^2}}\right )+\log \left (x+\sqrt [3]{-1+x^2}\right )-\frac {1}{2} \log \left (x^2-x \sqrt [3]{-1+x^2}+\left (-1+x^2\right )^{2/3}\right ) \]
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\[ \int \frac {-3+x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx=\int \frac {-3+x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \left (-\frac {3}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )}+\frac {x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )}\right ) \, dx \\ & = -\left (3 \int \frac {1}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx\right )+\int \frac {x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx \\ \end{align*}
Time = 0.10 (sec) , antiderivative size = 80, normalized size of antiderivative = 1.00 \[ \int \frac {-3+x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx=\sqrt {3} \arctan \left (\frac {\sqrt {3} \sqrt [3]{-1+x^2}}{-2 x+\sqrt [3]{-1+x^2}}\right )+\log \left (x+\sqrt [3]{-1+x^2}\right )-\frac {1}{2} \log \left (x^2-x \sqrt [3]{-1+x^2}+\left (-1+x^2\right )^{2/3}\right ) \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 1.46 (sec) , antiderivative size = 284, normalized size of antiderivative = 3.55
method | result | size |
trager | \(\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) \ln \left (-\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) \left (x^{2}-1\right )^{\frac {2}{3}} x -\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) \left (x^{2}-1\right )^{\frac {1}{3}} x^{2}+\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{3}+2 x \left (x^{2}-1\right )^{\frac {2}{3}}-2 \left (x^{2}-1\right )^{\frac {1}{3}} x^{2}+x^{3}-x^{2}+1}{x^{3}+x^{2}-1}\right )-\ln \left (\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2} x^{3}+2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{3}+\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{2}-3 x \left (x^{2}-1\right )^{\frac {2}{3}}+3 \left (x^{2}-1\right )^{\frac {1}{3}} x^{2}+2 x^{2}-\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )-2}{x^{3}+x^{2}-1}\right ) \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )-\ln \left (\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2} x^{3}+2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{3}+\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{2}-3 x \left (x^{2}-1\right )^{\frac {2}{3}}+3 \left (x^{2}-1\right )^{\frac {1}{3}} x^{2}+2 x^{2}-\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )-2}{x^{3}+x^{2}-1}\right )\) | \(284\) |
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Time = 0.70 (sec) , antiderivative size = 100, normalized size of antiderivative = 1.25 \[ \int \frac {-3+x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx=-\sqrt {3} \arctan \left (\frac {\sqrt {3} x^{3} + 2 \, \sqrt {3} {\left (x^{2} - 1\right )}^{\frac {1}{3}} x^{2} + 4 \, \sqrt {3} {\left (x^{2} - 1\right )}^{\frac {2}{3}} x}{x^{3} - 8 \, x^{2} + 8}\right ) + \frac {1}{2} \, \log \left (\frac {x^{3} + 3 \, {\left (x^{2} - 1\right )}^{\frac {1}{3}} x^{2} + x^{2} + 3 \, {\left (x^{2} - 1\right )}^{\frac {2}{3}} x - 1}{x^{3} + x^{2} - 1}\right ) \]
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\[ \int \frac {-3+x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx=\int \frac {x^{2} - 3}{\sqrt [3]{\left (x - 1\right ) \left (x + 1\right )} \left (x^{3} + x^{2} - 1\right )}\, dx \]
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\[ \int \frac {-3+x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx=\int { \frac {x^{2} - 3}{{\left (x^{3} + x^{2} - 1\right )} {\left (x^{2} - 1\right )}^{\frac {1}{3}}} \,d x } \]
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\[ \int \frac {-3+x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx=\int { \frac {x^{2} - 3}{{\left (x^{3} + x^{2} - 1\right )} {\left (x^{2} - 1\right )}^{\frac {1}{3}}} \,d x } \]
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Timed out. \[ \int \frac {-3+x^2}{\sqrt [3]{-1+x^2} \left (-1+x^2+x^3\right )} \, dx=\int \frac {x^2-3}{{\left (x^2-1\right )}^{1/3}\,\left (x^3+x^2-1\right )} \,d x \]
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