Optimal. Leaf size=8 \[ \frac {1}{4} \tanh ^{-1}\left (x^4\right ) \]
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Rubi [A]
time = 0.00, antiderivative size = 8, normalized size of antiderivative = 1.00, number of steps
used = 2, number of rules used = 2, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {281, 212}
\begin {gather*} \frac {1}{4} \tanh ^{-1}\left (x^4\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 212
Rule 281
Rubi steps
\begin {align*} \int \frac {x^3}{1-x^8} \, dx &=\frac {1}{4} \text {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,x^4\right )\\ &=\frac {1}{4} \tanh ^{-1}\left (x^4\right )\\ \end {align*}
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Mathematica [B] Leaf count is larger than twice the leaf count of optimal. \(23\) vs. \(2(8)=16\).
time = 0.00, size = 23, normalized size = 2.88 \begin {gather*} -\frac {1}{8} \log \left (1-x^4\right )+\frac {1}{8} \log \left (1+x^4\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(29\) vs.
\(2(6)=12\).
time = 0.18, size = 30, normalized size = 3.75
method | result | size |
meijerg | \(\frac {\arctanh \left (x^{4}\right )}{4}\) | \(7\) |
risch | \(-\frac {\ln \left (x^{4}-1\right )}{8}+\frac {\ln \left (x^{4}+1\right )}{8}\) | \(18\) |
default | \(-\frac {\ln \left (x -1\right )}{8}-\frac {\ln \left (x +1\right )}{8}-\frac {\ln \left (x^{2}+1\right )}{8}+\frac {\ln \left (x^{4}+1\right )}{8}\) | \(30\) |
norman | \(-\frac {\ln \left (x -1\right )}{8}-\frac {\ln \left (x +1\right )}{8}-\frac {\ln \left (x^{2}+1\right )}{8}+\frac {\ln \left (x^{4}+1\right )}{8}\) | \(30\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] Leaf count of result is larger than twice the leaf count of optimal. 17 vs.
\(2 (6) = 12\).
time = 0.28, size = 17, normalized size = 2.12 \begin {gather*} \frac {1}{8} \, \log \left (x^{4} + 1\right ) - \frac {1}{8} \, \log \left (x^{4} - 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Leaf count of result is larger than twice the leaf count of optimal. 17 vs.
\(2 (6) = 12\).
time = 0.35, size = 17, normalized size = 2.12 \begin {gather*} \frac {1}{8} \, \log \left (x^{4} + 1\right ) - \frac {1}{8} \, \log \left (x^{4} - 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 15 vs.
\(2 (5) = 10\).
time = 0.04, size = 15, normalized size = 1.88 \begin {gather*} - \frac {\log {\left (x^{4} - 1 \right )}}{8} + \frac {\log {\left (x^{4} + 1 \right )}}{8} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 18 vs.
\(2 (6) = 12\).
time = 1.69, size = 18, normalized size = 2.25 \begin {gather*} \frac {1}{8} \, \log \left (x^{4} + 1\right ) - \frac {1}{8} \, \log \left ({\left | x^{4} - 1 \right |}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.07, size = 6, normalized size = 0.75 \begin {gather*} \frac {\mathrm {atanh}\left (x^4\right )}{4} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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