Integrand size = 16, antiderivative size = 97 \[ \int \frac {1}{x^7 \left (1+3 x^4+x^8\right )} \, dx=-\frac {1}{6 x^6}+\frac {3}{2 x^2}-\frac {1}{2} \sqrt {\frac {1}{10} \left (123-55 \sqrt {5}\right )} \arctan \left (\sqrt {\frac {2}{3+\sqrt {5}}} x^2\right )+\frac {1}{2} \sqrt {\frac {1}{10} \left (123+55 \sqrt {5}\right )} \arctan \left (\sqrt {\frac {1}{2} \left (3+\sqrt {5}\right )} x^2\right ) \]
[Out]
Time = 0.09 (sec) , antiderivative size = 97, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.312, Rules used = {1373, 1137, 1295, 1180, 209} \[ \int \frac {1}{x^7 \left (1+3 x^4+x^8\right )} \, dx=-\frac {1}{2} \sqrt {\frac {1}{10} \left (123-55 \sqrt {5}\right )} \arctan \left (\sqrt {\frac {2}{3+\sqrt {5}}} x^2\right )+\frac {1}{2} \sqrt {\frac {1}{10} \left (123+55 \sqrt {5}\right )} \arctan \left (\sqrt {\frac {1}{2} \left (3+\sqrt {5}\right )} x^2\right )-\frac {1}{6 x^6}+\frac {3}{2 x^2} \]
[In]
[Out]
Rule 209
Rule 1137
Rule 1180
Rule 1295
Rule 1373
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {1}{x^4 \left (1+3 x^2+x^4\right )} \, dx,x,x^2\right ) \\ & = -\frac {1}{6 x^6}+\frac {1}{6} \text {Subst}\left (\int \frac {-9-3 x^2}{x^2 \left (1+3 x^2+x^4\right )} \, dx,x,x^2\right ) \\ & = -\frac {1}{6 x^6}+\frac {3}{2 x^2}-\frac {1}{6} \text {Subst}\left (\int \frac {-24-9 x^2}{1+3 x^2+x^4} \, dx,x,x^2\right ) \\ & = -\frac {1}{6 x^6}+\frac {3}{2 x^2}-\frac {1}{20} \left (-15+7 \sqrt {5}\right ) \text {Subst}\left (\int \frac {1}{\frac {3}{2}+\frac {\sqrt {5}}{2}+x^2} \, dx,x,x^2\right )+\frac {1}{20} \left (15+7 \sqrt {5}\right ) \text {Subst}\left (\int \frac {1}{\frac {3}{2}-\frac {\sqrt {5}}{2}+x^2} \, dx,x,x^2\right ) \\ & = -\frac {1}{6 x^6}+\frac {3}{2 x^2}-\frac {1}{2} \sqrt {\frac {1}{10} \left (123-55 \sqrt {5}\right )} \tan ^{-1}\left (\sqrt {\frac {2}{3+\sqrt {5}}} x^2\right )+\frac {1}{20} \sqrt {1230+550 \sqrt {5}} \tan ^{-1}\left (\sqrt {\frac {1}{2} \left (3+\sqrt {5}\right )} x^2\right ) \\ \end{align*}
Result contains higher order function than in optimal. Order 9 vs. order 3 in optimal.
Time = 0.02 (sec) , antiderivative size = 73, normalized size of antiderivative = 0.75 \[ \int \frac {1}{x^7 \left (1+3 x^4+x^8\right )} \, dx=-\frac {1}{6 x^6}+\frac {3}{2 x^2}+\frac {1}{4} \text {RootSum}\left [1+3 \text {$\#$1}^4+\text {$\#$1}^8\&,\frac {8 \log (x-\text {$\#$1})+3 \log (x-\text {$\#$1}) \text {$\#$1}^4}{3 \text {$\#$1}^2+2 \text {$\#$1}^6}\&\right ] \]
[In]
[Out]
Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 0.11 (sec) , antiderivative size = 48, normalized size of antiderivative = 0.49
method | result | size |
risch | \(\frac {\frac {3 x^{4}}{2}-\frac {1}{6}}{x^{6}}+\frac {\left (\munderset {\textit {\_R} =\operatorname {RootOf}\left (25 \textit {\_Z}^{4}+615 \textit {\_Z}^{2}+1\right )}{\sum }\textit {\_R} \ln \left (-90 \textit {\_R}^{3}+55 x^{2}-2207 \textit {\_R} \right )\right )}{4}\) | \(48\) |
default | \(-\frac {1}{6 x^{6}}+\frac {3}{2 x^{2}}+\frac {\left (-7+3 \sqrt {5}\right ) \sqrt {5}\, \arctan \left (\frac {4 x^{2}}{2 \sqrt {5}+2}\right )}{10+10 \sqrt {5}}+\frac {\left (7+3 \sqrt {5}\right ) \sqrt {5}\, \arctan \left (\frac {4 x^{2}}{2 \sqrt {5}-2}\right )}{-10+10 \sqrt {5}}\) | \(84\) |
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 190 vs. \(2 (55) = 110\).
Time = 0.25 (sec) , antiderivative size = 190, normalized size of antiderivative = 1.96 \[ \int \frac {1}{x^7 \left (1+3 x^4+x^8\right )} \, dx=-\frac {3 \, \sqrt {10} x^{6} \sqrt {55 \, \sqrt {5} - 123} \log \left (10 \, x^{2} + \sqrt {10} \sqrt {55 \, \sqrt {5} - 123} {\left (9 \, \sqrt {5} + 20\right )}\right ) - 3 \, \sqrt {10} x^{6} \sqrt {55 \, \sqrt {5} - 123} \log \left (10 \, x^{2} - \sqrt {10} \sqrt {55 \, \sqrt {5} - 123} {\left (9 \, \sqrt {5} + 20\right )}\right ) - 3 \, \sqrt {10} x^{6} \sqrt {-55 \, \sqrt {5} - 123} \log \left (10 \, x^{2} + \sqrt {10} {\left (9 \, \sqrt {5} - 20\right )} \sqrt {-55 \, \sqrt {5} - 123}\right ) + 3 \, \sqrt {10} x^{6} \sqrt {-55 \, \sqrt {5} - 123} \log \left (10 \, x^{2} - \sqrt {10} {\left (9 \, \sqrt {5} - 20\right )} \sqrt {-55 \, \sqrt {5} - 123}\right ) - 180 \, x^{4} + 20}{120 \, x^{6}} \]
[In]
[Out]
Time = 0.13 (sec) , antiderivative size = 65, normalized size of antiderivative = 0.67 \[ \int \frac {1}{x^7 \left (1+3 x^4+x^8\right )} \, dx=2 \cdot \left (\frac {11 \sqrt {5}}{40} + \frac {5}{8}\right ) \operatorname {atan}{\left (\frac {2 x^{2}}{-1 + \sqrt {5}} \right )} - 2 \cdot \left (\frac {5}{8} - \frac {11 \sqrt {5}}{40}\right ) \operatorname {atan}{\left (\frac {2 x^{2}}{1 + \sqrt {5}} \right )} + \frac {9 x^{4} - 1}{6 x^{6}} \]
[In]
[Out]
\[ \int \frac {1}{x^7 \left (1+3 x^4+x^8\right )} \, dx=\int { \frac {1}{{\left (x^{8} + 3 \, x^{4} + 1\right )} x^{7}} \,d x } \]
[In]
[Out]
none
Time = 0.38 (sec) , antiderivative size = 77, normalized size of antiderivative = 0.79 \[ \int \frac {1}{x^7 \left (1+3 x^4+x^8\right )} \, dx=\frac {1}{20} \, {\left (3 \, x^{4} {\left (\sqrt {5} - 5\right )} + 8 \, \sqrt {5} - 40\right )} \arctan \left (\frac {2 \, x^{2}}{\sqrt {5} + 1}\right ) + \frac {1}{20} \, {\left (3 \, x^{4} {\left (\sqrt {5} + 5\right )} + 8 \, \sqrt {5} + 40\right )} \arctan \left (\frac {2 \, x^{2}}{\sqrt {5} - 1}\right ) + \frac {9 \, x^{4} - 1}{6 \, x^{6}} \]
[In]
[Out]
Time = 0.08 (sec) , antiderivative size = 136, normalized size of antiderivative = 1.40 \[ \int \frac {1}{x^7 \left (1+3 x^4+x^8\right )} \, dx=2\,\mathrm {atanh}\left (\frac {3327500\,x^2\,\sqrt {\frac {11\,\sqrt {5}}{32}-\frac {123}{160}}}{1140425\,\sqrt {5}-2550075}-\frac {1488300\,\sqrt {5}\,x^2\,\sqrt {\frac {11\,\sqrt {5}}{32}-\frac {123}{160}}}{1140425\,\sqrt {5}-2550075}\right )\,\sqrt {\frac {11\,\sqrt {5}}{32}-\frac {123}{160}}-2\,\mathrm {atanh}\left (\frac {3327500\,x^2\,\sqrt {-\frac {11\,\sqrt {5}}{32}-\frac {123}{160}}}{1140425\,\sqrt {5}+2550075}+\frac {1488300\,\sqrt {5}\,x^2\,\sqrt {-\frac {11\,\sqrt {5}}{32}-\frac {123}{160}}}{1140425\,\sqrt {5}+2550075}\right )\,\sqrt {-\frac {11\,\sqrt {5}}{32}-\frac {123}{160}}+\frac {\frac {3\,x^4}{2}-\frac {1}{6}}{x^6} \]
[In]
[Out]