Integrand size = 16, antiderivative size = 43 \[ \int \frac {1}{x^6 \left (1-2 x^4+x^8\right )} \, dx=-\frac {9}{20 x^5}-\frac {9}{4 x}+\frac {1}{4 x^5 \left (1-x^4\right )}-\frac {9 \arctan (x)}{8}+\frac {9 \text {arctanh}(x)}{8} \]
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Time = 0.01 (sec) , antiderivative size = 43, 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 = {28, 296, 331, 304, 209, 212} \[ \int \frac {1}{x^6 \left (1-2 x^4+x^8\right )} \, dx=-\frac {9 \arctan (x)}{8}+\frac {9 \text {arctanh}(x)}{8}-\frac {9}{20 x^5}+\frac {1}{4 x^5 \left (1-x^4\right )}-\frac {9}{4 x} \]
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Rule 28
Rule 209
Rule 212
Rule 296
Rule 304
Rule 331
Rubi steps \begin{align*} \text {integral}& = \int \frac {1}{x^6 \left (-1+x^4\right )^2} \, dx \\ & = \frac {1}{4 x^5 \left (1-x^4\right )}-\frac {9}{4} \int \frac {1}{x^6 \left (-1+x^4\right )} \, dx \\ & = -\frac {9}{20 x^5}+\frac {1}{4 x^5 \left (1-x^4\right )}-\frac {9}{4} \int \frac {1}{x^2 \left (-1+x^4\right )} \, dx \\ & = -\frac {9}{20 x^5}-\frac {9}{4 x}+\frac {1}{4 x^5 \left (1-x^4\right )}-\frac {9}{4} \int \frac {x^2}{-1+x^4} \, dx \\ & = -\frac {9}{20 x^5}-\frac {9}{4 x}+\frac {1}{4 x^5 \left (1-x^4\right )}+\frac {9}{8} \int \frac {1}{1-x^2} \, dx-\frac {9}{8} \int \frac {1}{1+x^2} \, dx \\ & = -\frac {9}{20 x^5}-\frac {9}{4 x}+\frac {1}{4 x^5 \left (1-x^4\right )}-\frac {9}{8} \tan ^{-1}(x)+\frac {9}{8} \tanh ^{-1}(x) \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.19 \[ \int \frac {1}{x^6 \left (1-2 x^4+x^8\right )} \, dx=-\frac {1}{5 x^5}-\frac {2}{x}-\frac {x^3}{4 \left (-1+x^4\right )}-\frac {9 \arctan (x)}{8}-\frac {9}{16} \log (1-x)+\frac {9}{16} \log (1+x) \]
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Time = 0.13 (sec) , antiderivative size = 41, normalized size of antiderivative = 0.95
method | result | size |
risch | \(\frac {-\frac {9}{4} x^{8}+\frac {9}{5} x^{4}+\frac {1}{5}}{x^{5} \left (x^{4}-1\right )}-\frac {9 \ln \left (x -1\right )}{16}+\frac {9 \ln \left (x +1\right )}{16}-\frac {9 \arctan \left (x \right )}{8}\) | \(41\) |
default | \(-\frac {1}{5 x^{5}}-\frac {2}{x}-\frac {1}{16 \left (x +1\right )}+\frac {9 \ln \left (x +1\right )}{16}-\frac {x}{8 \left (x^{2}+1\right )}-\frac {9 \arctan \left (x \right )}{8}-\frac {1}{16 \left (x -1\right )}-\frac {9 \ln \left (x -1\right )}{16}\) | \(52\) |
parallelrisch | \(-\frac {-45 i \ln \left (x -i\right ) x^{9}+45 i \ln \left (x +i\right ) x^{9}+45 \ln \left (x -1\right ) x^{9}-45 \ln \left (x +1\right ) x^{9}-16+180 x^{8}+45 i \ln \left (x -i\right ) x^{5}-45 i \ln \left (x +i\right ) x^{5}-45 \ln \left (x -1\right ) x^{5}+45 \ln \left (x +1\right ) x^{5}-144 x^{4}}{80 x^{5} \left (x^{4}-1\right )}\) | \(105\) |
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Leaf count of result is larger than twice the leaf count of optimal. 68 vs. \(2 (31) = 62\).
Time = 0.25 (sec) , antiderivative size = 68, normalized size of antiderivative = 1.58 \[ \int \frac {1}{x^6 \left (1-2 x^4+x^8\right )} \, dx=-\frac {180 \, x^{8} - 144 \, x^{4} + 90 \, {\left (x^{9} - x^{5}\right )} \arctan \left (x\right ) - 45 \, {\left (x^{9} - x^{5}\right )} \log \left (x + 1\right ) + 45 \, {\left (x^{9} - x^{5}\right )} \log \left (x - 1\right ) - 16}{80 \, {\left (x^{9} - x^{5}\right )}} \]
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Time = 0.09 (sec) , antiderivative size = 44, normalized size of antiderivative = 1.02 \[ \int \frac {1}{x^6 \left (1-2 x^4+x^8\right )} \, dx=- \frac {9 \log {\left (x - 1 \right )}}{16} + \frac {9 \log {\left (x + 1 \right )}}{16} - \frac {9 \operatorname {atan}{\left (x \right )}}{8} + \frac {- 45 x^{8} + 36 x^{4} + 4}{20 x^{9} - 20 x^{5}} \]
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none
Time = 0.32 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.98 \[ \int \frac {1}{x^6 \left (1-2 x^4+x^8\right )} \, dx=-\frac {45 \, x^{8} - 36 \, x^{4} - 4}{20 \, {\left (x^{9} - x^{5}\right )}} - \frac {9}{8} \, \arctan \left (x\right ) + \frac {9}{16} \, \log \left (x + 1\right ) - \frac {9}{16} \, \log \left (x - 1\right ) \]
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Time = 0.30 (sec) , antiderivative size = 43, normalized size of antiderivative = 1.00 \[ \int \frac {1}{x^6 \left (1-2 x^4+x^8\right )} \, dx=-\frac {x^{3}}{4 \, {\left (x^{4} - 1\right )}} - \frac {10 \, x^{4} + 1}{5 \, x^{5}} - \frac {9}{8} \, \arctan \left (x\right ) + \frac {9}{16} \, \log \left ({\left | x + 1 \right |}\right ) - \frac {9}{16} \, \log \left ({\left | x - 1 \right |}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.79 \[ \int \frac {1}{x^6 \left (1-2 x^4+x^8\right )} \, dx=\frac {9\,\mathrm {atanh}\left (x\right )}{8}-\frac {9\,\mathrm {atan}\left (x\right )}{8}-\frac {-\frac {9\,x^8}{4}+\frac {9\,x^4}{5}+\frac {1}{5}}{x^5-x^9} \]
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