Optimal. Leaf size=24 \[ -\frac {1}{6 x^6}+\frac {1}{4} \tan ^{-1}\left (x^2\right )+\frac {1}{4} \tanh ^{-1}\left (x^2\right ) \]
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Rubi [A] time = 0.01, antiderivative size = 24, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.385, Rules used = {275, 325, 212, 206, 203} \[ -\frac {1}{6 x^6}+\frac {1}{4} \tan ^{-1}\left (x^2\right )+\frac {1}{4} \tanh ^{-1}\left (x^2\right ) \]
Antiderivative was successfully verified.
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Rule 203
Rule 206
Rule 212
Rule 275
Rule 325
Rubi steps
\begin {align*} \int \frac {1}{x^7 \left (1-x^8\right )} \, dx &=\frac {1}{2} \operatorname {Subst}\left (\int \frac {1}{x^4 \left (1-x^4\right )} \, dx,x,x^2\right )\\ &=-\frac {1}{6 x^6}+\frac {1}{2} \operatorname {Subst}\left (\int \frac {1}{1-x^4} \, dx,x,x^2\right )\\ &=-\frac {1}{6 x^6}+\frac {1}{4} \operatorname {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,x^2\right )+\frac {1}{4} \operatorname {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,x^2\right )\\ &=-\frac {1}{6 x^6}+\frac {1}{4} \tan ^{-1}\left (x^2\right )+\frac {1}{4} \tanh ^{-1}\left (x^2\right )\\ \end {align*}
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Mathematica [A] time = 0.01, size = 38, normalized size = 1.58 \[ -\frac {1}{6 x^6}-\frac {1}{8} \log \left (1-x^2\right )+\frac {1}{8} \log \left (x^2+1\right )-\frac {1}{4} \tan ^{-1}\left (\frac {1}{x^2}\right ) \]
Antiderivative was successfully verified.
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fricas [B] time = 0.52, size = 38, normalized size = 1.58 \[ \frac {6 \, x^{6} \arctan \left (x^{2}\right ) + 3 \, x^{6} \log \left (x^{2} + 1\right ) - 3 \, x^{6} \log \left (x^{2} - 1\right ) - 4}{24 \, x^{6}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.32, size = 29, normalized size = 1.21 \[ -\frac {1}{6 \, x^{6}} + \frac {1}{4} \, \arctan \left (x^{2}\right ) + \frac {1}{8} \, \log \left (x^{2} + 1\right ) - \frac {1}{8} \, \log \left ({\left | x^{2} - 1 \right |}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 33, normalized size = 1.38 \[ \frac {\arctan \left (x^{2}\right )}{4}-\frac {\ln \left (x -1\right )}{8}-\frac {\ln \left (x +1\right )}{8}+\frac {\ln \left (x^{2}+1\right )}{8}-\frac {1}{6 x^{6}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 2.35, size = 28, normalized size = 1.17 \[ -\frac {1}{6 \, x^{6}} + \frac {1}{4} \, \arctan \left (x^{2}\right ) + \frac {1}{8} \, \log \left (x^{2} + 1\right ) - \frac {1}{8} \, \log \left (x^{2} - 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.05, size = 18, normalized size = 0.75 \[ \frac {\mathrm {atan}\left (x^2\right )}{4}+\frac {\mathrm {atanh}\left (x^2\right )}{4}-\frac {1}{6\,x^6} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.21, size = 29, normalized size = 1.21 \[ - \frac {\log {\left (x^{2} - 1 \right )}}{8} + \frac {\log {\left (x^{2} + 1 \right )}}{8} + \frac {\operatorname {atan}{\left (x^{2} \right )}}{4} - \frac {1}{6 x^{6}} \]
Verification of antiderivative is not currently implemented for this CAS.
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