Integrand size = 16, antiderivative size = 89 \[ \int \frac {1}{x^3 \left (1+3 x^4+x^8\right )} \, dx=-\frac {1}{2 x^2}+\frac {1}{2} \sqrt {\frac {1}{5} \left (9-4 \sqrt {5}\right )} \arctan \left (\sqrt {\frac {2}{3+\sqrt {5}}} x^2\right )-\frac {\left (3+\sqrt {5}\right )^{3/2} \arctan \left (\sqrt {\frac {1}{2} \left (3+\sqrt {5}\right )} x^2\right )}{4 \sqrt {10}} \]
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Time = 0.05 (sec) , antiderivative size = 89, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {1373, 1137, 1180, 209} \[ \int \frac {1}{x^3 \left (1+3 x^4+x^8\right )} \, dx=\frac {1}{2} \sqrt {\frac {1}{5} \left (9-4 \sqrt {5}\right )} \arctan \left (\sqrt {\frac {2}{3+\sqrt {5}}} x^2\right )-\frac {\left (3+\sqrt {5}\right )^{3/2} \arctan \left (\sqrt {\frac {1}{2} \left (3+\sqrt {5}\right )} x^2\right )}{4 \sqrt {10}}-\frac {1}{2 x^2} \]
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Rule 209
Rule 1137
Rule 1180
Rule 1373
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {1}{x^2 \left (1+3 x^2+x^4\right )} \, dx,x,x^2\right ) \\ & = -\frac {1}{2 x^2}+\frac {1}{2} \text {Subst}\left (\int \frac {-3-x^2}{1+3 x^2+x^4} \, dx,x,x^2\right ) \\ & = -\frac {1}{2 x^2}+\frac {1}{20} \left (-5+3 \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 (5+3 \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}{2 x^2}+\frac {1}{10} \sqrt {45-20 \sqrt {5}} \tan ^{-1}\left (\sqrt {\frac {2}{3+\sqrt {5}}} x^2\right )-\frac {\left (3+\sqrt {5}\right )^{3/2} \tan ^{-1}\left (\sqrt {\frac {1}{2} \left (3+\sqrt {5}\right )} x^2\right )}{4 \sqrt {10}} \\ \end{align*}
Result contains higher order function than in optimal. Order 9 vs. order 3 in optimal.
Time = 0.02 (sec) , antiderivative size = 65, normalized size of antiderivative = 0.73 \[ \int \frac {1}{x^3 \left (1+3 x^4+x^8\right )} \, dx=-\frac {1}{2 x^2}-\frac {1}{4} \text {RootSum}\left [1+3 \text {$\#$1}^4+\text {$\#$1}^8\&,\frac {3 \log (x-\text {$\#$1})+\log (x-\text {$\#$1}) \text {$\#$1}^4}{3 \text {$\#$1}^2+2 \text {$\#$1}^6}\&\right ] \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 0.09 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.47
method | result | size |
risch | \(-\frac {1}{2 x^{2}}+\frac {\left (\munderset {\textit {\_R} =\operatorname {RootOf}\left (25 \textit {\_Z}^{4}+90 \textit {\_Z}^{2}+1\right )}{\sum }\textit {\_R} \ln \left (35 \textit {\_R}^{3}+8 x^{2}+123 \textit {\_R} \right )\right )}{4}\) | \(42\) |
default | \(-\frac {1}{2 x^{2}}-\frac {\left (\sqrt {5}-3\right ) \sqrt {5}\, \arctan \left (\frac {4 x^{2}}{2 \sqrt {5}+2}\right )}{5 \left (2 \sqrt {5}+2\right )}-\frac {\left (3+\sqrt {5}\right ) \sqrt {5}\, \arctan \left (\frac {4 x^{2}}{2 \sqrt {5}-2}\right )}{5 \left (2 \sqrt {5}-2\right )}\) | \(75\) |
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Leaf count of result is larger than twice the leaf count of optimal. 171 vs. \(2 (53) = 106\).
Time = 0.25 (sec) , antiderivative size = 171, normalized size of antiderivative = 1.92 \[ \int \frac {1}{x^3 \left (1+3 x^4+x^8\right )} \, dx=\frac {\sqrt {5} x^{2} \sqrt {4 \, \sqrt {5} - 9} \log \left (2 \, x^{2} + \sqrt {4 \, \sqrt {5} - 9} {\left (3 \, \sqrt {5} + 7\right )}\right ) - \sqrt {5} x^{2} \sqrt {4 \, \sqrt {5} - 9} \log \left (2 \, x^{2} - \sqrt {4 \, \sqrt {5} - 9} {\left (3 \, \sqrt {5} + 7\right )}\right ) + \sqrt {5} x^{2} \sqrt {-4 \, \sqrt {5} - 9} \log \left (2 \, x^{2} + {\left (3 \, \sqrt {5} - 7\right )} \sqrt {-4 \, \sqrt {5} - 9}\right ) - \sqrt {5} x^{2} \sqrt {-4 \, \sqrt {5} - 9} \log \left (2 \, x^{2} - {\left (3 \, \sqrt {5} - 7\right )} \sqrt {-4 \, \sqrt {5} - 9}\right ) - 10}{20 \, x^{2}} \]
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Time = 0.11 (sec) , antiderivative size = 56, normalized size of antiderivative = 0.63 \[ \int \frac {1}{x^3 \left (1+3 x^4+x^8\right )} \, dx=- 2 \left (\frac {\sqrt {5}}{10} + \frac {1}{4}\right ) \operatorname {atan}{\left (\frac {2 x^{2}}{-1 + \sqrt {5}} \right )} + 2 \cdot \left (\frac {1}{4} - \frac {\sqrt {5}}{10}\right ) \operatorname {atan}{\left (\frac {2 x^{2}}{1 + \sqrt {5}} \right )} - \frac {1}{2 x^{2}} \]
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\[ \int \frac {1}{x^3 \left (1+3 x^4+x^8\right )} \, dx=\int { \frac {1}{{\left (x^{8} + 3 \, x^{4} + 1\right )} x^{3}} \,d x } \]
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none
Time = 0.34 (sec) , antiderivative size = 68, normalized size of antiderivative = 0.76 \[ \int \frac {1}{x^3 \left (1+3 x^4+x^8\right )} \, dx=-\frac {1}{20} \, {\left (x^{4} {\left (\sqrt {5} - 5\right )} + 3 \, \sqrt {5} - 15\right )} \arctan \left (\frac {2 \, x^{2}}{\sqrt {5} + 1}\right ) - \frac {1}{20} \, {\left (x^{4} {\left (\sqrt {5} + 5\right )} + 3 \, \sqrt {5} + 15\right )} \arctan \left (\frac {2 \, x^{2}}{\sqrt {5} - 1}\right ) - \frac {1}{2 \, x^{2}} \]
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Time = 0.03 (sec) , antiderivative size = 130, normalized size of antiderivative = 1.46 \[ \int \frac {1}{x^3 \left (1+3 x^4+x^8\right )} \, dx=2\,\mathrm {atanh}\left (\frac {26880\,x^2\,\sqrt {-\frac {\sqrt {5}}{20}-\frac {9}{80}}}{3520\,\sqrt {5}+7872}+\frac {12032\,\sqrt {5}\,x^2\,\sqrt {-\frac {\sqrt {5}}{20}-\frac {9}{80}}}{3520\,\sqrt {5}+7872}\right )\,\sqrt {-\frac {\sqrt {5}}{20}-\frac {9}{80}}-2\,\mathrm {atanh}\left (\frac {26880\,x^2\,\sqrt {\frac {\sqrt {5}}{20}-\frac {9}{80}}}{3520\,\sqrt {5}-7872}-\frac {12032\,\sqrt {5}\,x^2\,\sqrt {\frac {\sqrt {5}}{20}-\frac {9}{80}}}{3520\,\sqrt {5}-7872}\right )\,\sqrt {\frac {\sqrt {5}}{20}-\frac {9}{80}}-\frac {1}{2\,x^2} \]
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