Integrand size = 30, antiderivative size = 147 \[ \int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx=-\sqrt {3} \arctan \left (\frac {3 \sqrt {3} x \sqrt [3]{x+x^4}-3 x^2 \sqrt [3]{x+x^4}}{-6+2 \sqrt {3} x-3 x \sqrt [3]{x+x^4}+\sqrt {3} x^2 \sqrt [3]{x+x^4}}\right )+2 \text {arctanh}\left (1-2 x \sqrt [3]{x+x^4}\right )-\text {arctanh}\left (\frac {1+x \sqrt [3]{x+x^4}}{1+x \sqrt [3]{x+x^4}+2 x^2 \left (x+x^4\right )^{2/3}}\right ) \]
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\[ \int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx=\int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \frac {\left (\sqrt [3]{x} \sqrt [3]{1+x^3}\right ) \int \frac {x^{5/3} \left (4+7 x^3\right )}{\sqrt [3]{1+x^3} \left (-1+x^4+x^7\right )} \, dx}{\sqrt [3]{x+x^4}} \\ & = \frac {\left (3 \sqrt [3]{x} \sqrt [3]{1+x^3}\right ) \text {Subst}\left (\int \frac {x^7 \left (4+7 x^9\right )}{\sqrt [3]{1+x^9} \left (-1+x^{12}+x^{21}\right )} \, dx,x,\sqrt [3]{x}\right )}{\sqrt [3]{x+x^4}} \\ & = \frac {\left (3 \sqrt [3]{x} \sqrt [3]{1+x^3}\right ) \text {Subst}\left (\int \left (\frac {4 x^7}{\sqrt [3]{1+x^9} \left (-1+x^{12}+x^{21}\right )}+\frac {7 x^{16}}{\sqrt [3]{1+x^9} \left (-1+x^{12}+x^{21}\right )}\right ) \, dx,x,\sqrt [3]{x}\right )}{\sqrt [3]{x+x^4}} \\ & = \frac {\left (12 \sqrt [3]{x} \sqrt [3]{1+x^3}\right ) \text {Subst}\left (\int \frac {x^7}{\sqrt [3]{1+x^9} \left (-1+x^{12}+x^{21}\right )} \, dx,x,\sqrt [3]{x}\right )}{\sqrt [3]{x+x^4}}+\frac {\left (21 \sqrt [3]{x} \sqrt [3]{1+x^3}\right ) \text {Subst}\left (\int \frac {x^{16}}{\sqrt [3]{1+x^9} \left (-1+x^{12}+x^{21}\right )} \, dx,x,\sqrt [3]{x}\right )}{\sqrt [3]{x+x^4}} \\ \end{align*}
\[ \int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx=\int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 6.57 (sec) , antiderivative size = 485, normalized size of antiderivative = 3.30
method | result | size |
trager | \(\operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) \ln \left (\frac {-25169216 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2} x^{7}-17080755 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{7}+134838374 x^{7}-25169216 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2} x^{4}+168096051 \left (x^{4}+x \right )^{\frac {2}{3}} \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{2}-17080755 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{4}+311926719 x^{2} \left (x^{4}+x \right )^{\frac {2}{3}}+134838374 x^{4}+168096051 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) \left (x^{4}+x \right )^{\frac {1}{3}} x +311926719 x \left (x^{4}+x \right )^{\frac {1}{3}}+50338432 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2}+210346022 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )+202257561}{x^{7}+x^{4}-1}\right )-\ln \left (-\frac {25169216 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2} x^{7}+33257677 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{7}-126749913 x^{7}+25169216 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2} x^{4}+168096051 \left (x^{4}+x \right )^{\frac {2}{3}} \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{2}+33257677 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{4}-143830668 x^{2} \left (x^{4}+x \right )^{\frac {2}{3}}-126749913 x^{4}+168096051 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) \left (x^{4}+x \right )^{\frac {1}{3}} x -143830668 x \left (x^{4}+x \right )^{\frac {1}{3}}-50338432 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2}+109669158 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )-42249971}{x^{7}+x^{4}-1}\right ) \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )-\ln \left (-\frac {25169216 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2} x^{7}+33257677 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{7}-126749913 x^{7}+25169216 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2} x^{4}+168096051 \left (x^{4}+x \right )^{\frac {2}{3}} \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{2}+33257677 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) x^{4}-143830668 x^{2} \left (x^{4}+x \right )^{\frac {2}{3}}-126749913 x^{4}+168096051 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right ) \left (x^{4}+x \right )^{\frac {1}{3}} x -143830668 x \left (x^{4}+x \right )^{\frac {1}{3}}-50338432 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )^{2}+109669158 \operatorname {RootOf}\left (\textit {\_Z}^{2}+\textit {\_Z} +1\right )-42249971}{x^{7}+x^{4}-1}\right )\) | \(485\) |
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Time = 2.03 (sec) , antiderivative size = 103, normalized size of antiderivative = 0.70 \[ \int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx=-\sqrt {3} \arctan \left (\frac {2 \, \sqrt {3} {\left (x^{4} + x\right )}^{\frac {2}{3}} x^{2} - 4 \, \sqrt {3} {\left (x^{4} + x\right )}^{\frac {1}{3}} x - \sqrt {3} {\left (x^{7} + x^{4}\right )}}{x^{7} + x^{4} + 8}\right ) + \frac {1}{2} \, \log \left (\frac {x^{7} + x^{4} - 3 \, {\left (x^{4} + x\right )}^{\frac {2}{3}} x^{2} + 3 \, {\left (x^{4} + x\right )}^{\frac {1}{3}} x - 1}{x^{7} + x^{4} - 1}\right ) \]
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\[ \int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx=\int \frac {x^{2} \cdot \left (7 x^{3} + 4\right )}{\sqrt [3]{x \left (x + 1\right ) \left (x^{2} - x + 1\right )} \left (x^{7} + x^{4} - 1\right )}\, dx \]
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\[ \int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx=\int { \frac {{\left (7 \, x^{3} + 4\right )} x^{2}}{{\left (x^{7} + x^{4} - 1\right )} {\left (x^{4} + x\right )}^{\frac {1}{3}}} \,d x } \]
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\[ \int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx=\int { \frac {{\left (7 \, x^{3} + 4\right )} x^{2}}{{\left (x^{7} + x^{4} - 1\right )} {\left (x^{4} + x\right )}^{\frac {1}{3}}} \,d x } \]
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Timed out. \[ \int \frac {x^2 \left (4+7 x^3\right )}{\sqrt [3]{x+x^4} \left (-1+x^4+x^7\right )} \, dx=\int \frac {x^2\,\left (7\,x^3+4\right )}{{\left (x^4+x\right )}^{1/3}\,\left (x^7+x^4-1\right )} \,d x \]
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