Integrand size = 15, antiderivative size = 55 \[ \int \frac {1}{x^7 \left (1-x^4\right )^{3/2}} \, dx=-\frac {1}{6 x^6 \sqrt {1-x^4}}-\frac {2}{3 x^2 \sqrt {1-x^4}}+\frac {4 x^2}{3 \sqrt {1-x^4}} \]
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Time = 0.01 (sec) , antiderivative size = 55, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {277, 270} \[ \int \frac {1}{x^7 \left (1-x^4\right )^{3/2}} \, dx=-\frac {1}{6 \sqrt {1-x^4} x^6}+\frac {4 x^2}{3 \sqrt {1-x^4}}-\frac {2}{3 \sqrt {1-x^4} x^2} \]
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Rule 270
Rule 277
Rubi steps \begin{align*} \text {integral}& = -\frac {1}{6 x^6 \sqrt {1-x^4}}+\frac {4}{3} \int \frac {1}{x^3 \left (1-x^4\right )^{3/2}} \, dx \\ & = -\frac {1}{6 x^6 \sqrt {1-x^4}}-\frac {2}{3 x^2 \sqrt {1-x^4}}+\frac {8}{3} \int \frac {x}{\left (1-x^4\right )^{3/2}} \, dx \\ & = -\frac {1}{6 x^6 \sqrt {1-x^4}}-\frac {2}{3 x^2 \sqrt {1-x^4}}+\frac {4 x^2}{3 \sqrt {1-x^4}} \\ \end{align*}
Time = 0.19 (sec) , antiderivative size = 30, normalized size of antiderivative = 0.55 \[ \int \frac {1}{x^7 \left (1-x^4\right )^{3/2}} \, dx=\frac {-1-4 x^4+8 x^8}{6 x^6 \sqrt {1-x^4}} \]
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Time = 4.24 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.49
method | result | size |
default | \(\frac {8 x^{8}-4 x^{4}-1}{6 \sqrt {-x^{4}+1}\, x^{6}}\) | \(27\) |
meijerg | \(-\frac {-8 x^{8}+4 x^{4}+1}{6 x^{6} \sqrt {-x^{4}+1}}\) | \(27\) |
risch | \(\frac {8 x^{8}-4 x^{4}-1}{6 \sqrt {-x^{4}+1}\, x^{6}}\) | \(27\) |
elliptic | \(\frac {8 x^{8}-4 x^{4}-1}{6 \sqrt {-x^{4}+1}\, x^{6}}\) | \(27\) |
pseudoelliptic | \(\frac {8 x^{8}-4 x^{4}-1}{6 \sqrt {-x^{4}+1}\, x^{6}}\) | \(27\) |
trager | \(-\frac {\left (8 x^{8}-4 x^{4}-1\right ) \sqrt {-x^{4}+1}}{6 \left (x^{4}-1\right ) x^{6}}\) | \(34\) |
gosper | \(-\frac {\left (-1+x \right ) \left (1+x \right ) \left (x^{2}+1\right ) \left (8 x^{8}-4 x^{4}-1\right )}{6 x^{6} \left (-x^{4}+1\right )^{\frac {3}{2}}}\) | \(38\) |
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none
Time = 0.29 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.62 \[ \int \frac {1}{x^7 \left (1-x^4\right )^{3/2}} \, dx=-\frac {{\left (8 \, x^{8} - 4 \, x^{4} - 1\right )} \sqrt {-x^{4} + 1}}{6 \, {\left (x^{10} - x^{6}\right )}} \]
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Result contains complex when optimal does not.
Time = 0.63 (sec) , antiderivative size = 151, normalized size of antiderivative = 2.75 \[ \int \frac {1}{x^7 \left (1-x^4\right )^{3/2}} \, dx=\begin {cases} - \frac {8 x^{8} \sqrt {-1 + \frac {1}{x^{4}}}}{6 x^{8} - 6 x^{4}} + \frac {4 x^{4} \sqrt {-1 + \frac {1}{x^{4}}}}{6 x^{8} - 6 x^{4}} + \frac {\sqrt {-1 + \frac {1}{x^{4}}}}{6 x^{8} - 6 x^{4}} & \text {for}\: \frac {1}{\left |{x^{4}}\right |} > 1 \\- \frac {8 i x^{8} \sqrt {1 - \frac {1}{x^{4}}}}{6 x^{8} - 6 x^{4}} + \frac {4 i x^{4} \sqrt {1 - \frac {1}{x^{4}}}}{6 x^{8} - 6 x^{4}} + \frac {i \sqrt {1 - \frac {1}{x^{4}}}}{6 x^{8} - 6 x^{4}} & \text {otherwise} \end {cases} \]
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none
Time = 0.19 (sec) , antiderivative size = 43, normalized size of antiderivative = 0.78 \[ \int \frac {1}{x^7 \left (1-x^4\right )^{3/2}} \, dx=\frac {x^{2}}{2 \, \sqrt {-x^{4} + 1}} - \frac {\sqrt {-x^{4} + 1}}{x^{2}} - \frac {{\left (-x^{4} + 1\right )}^{\frac {3}{2}}}{6 \, x^{6}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 94 vs. \(2 (43) = 86\).
Time = 0.30 (sec) , antiderivative size = 94, normalized size of antiderivative = 1.71 \[ \int \frac {1}{x^7 \left (1-x^4\right )^{3/2}} \, dx=\frac {x^{6} {\left (\frac {21 \, {\left (\sqrt {-x^{4} + 1} - 1\right )}^{2}}{x^{4}} + 1\right )}}{48 \, {\left (\sqrt {-x^{4} + 1} - 1\right )}^{3}} - \frac {\sqrt {-x^{4} + 1} x^{2}}{2 \, {\left (x^{4} - 1\right )}} - \frac {7 \, {\left (\sqrt {-x^{4} + 1} - 1\right )}}{16 \, x^{2}} - \frac {{\left (\sqrt {-x^{4} + 1} - 1\right )}^{3}}{48 \, x^{6}} \]
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Time = 5.78 (sec) , antiderivative size = 30, normalized size of antiderivative = 0.55 \[ \int \frac {1}{x^7 \left (1-x^4\right )^{3/2}} \, dx=\frac {8\,{\left (x^4-1\right )}^2+12\,x^4-9}{6\,x^6\,\sqrt {1-x^4}} \]
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