Optimal. Leaf size=29 \[ \frac {x^4}{4}-\frac {1}{2} e^{-2 a} \log \left (1+e^{2 a} x^4\right ) \]
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Rubi [A]
time = 0.03, antiderivative size = 29, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 3, integrand size = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.273, Rules used = {5656, 455, 45}
\begin {gather*} \frac {x^4}{4}-\frac {1}{2} e^{-2 a} \log \left (e^{2 a} x^4+1\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 45
Rule 455
Rule 5656
Rubi steps
\begin {align*} \int x^3 \tanh (a+2 \log (x)) \, dx &=\int x^3 \tanh (a+2 \log (x)) \, dx\\ \end {align*}
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Mathematica [B] Leaf count is larger than twice the leaf count of optimal. \(64\) vs. \(2(29)=58\).
time = 0.02, size = 64, normalized size = 2.21 \begin {gather*} \frac {x^4}{4}-\frac {1}{2} \cosh (2 a) \log \left (\cosh (a)+x^4 \cosh (a)-\sinh (a)+x^4 \sinh (a)\right )+\frac {1}{2} \log \left (\cosh (a)+x^4 \cosh (a)-\sinh (a)+x^4 \sinh (a)\right ) \sinh (2 a) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.49, size = 24, normalized size = 0.83
method | result | size |
risch | \(\frac {x^{4}}{4}-\frac {{\mathrm e}^{-2 a} \ln \left (1+{\mathrm e}^{2 a} x^{4}\right )}{2}\) | \(24\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.28, size = 23, normalized size = 0.79 \begin {gather*} \frac {1}{4} \, x^{4} - \frac {1}{2} \, e^{\left (-2 \, a\right )} \log \left (x^{4} e^{\left (2 \, a\right )} + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.34, size = 28, normalized size = 0.97 \begin {gather*} \frac {1}{4} \, {\left (x^{4} e^{\left (2 \, a\right )} - 2 \, \log \left (x^{4} e^{\left (2 \, a\right )} + 1\right )\right )} e^{\left (-2 \, a\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int x^{3} \tanh {\left (a + 2 \log {\left (x \right )} \right )}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.40, size = 23, normalized size = 0.79 \begin {gather*} \frac {1}{4} \, x^{4} - \frac {1}{2} \, e^{\left (-2 \, a\right )} \log \left (x^{4} e^{\left (2 \, a\right )} + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.08, size = 21, normalized size = 0.72 \begin {gather*} \frac {x^4}{4}-\frac {{\mathrm {e}}^{-2\,a}\,\ln \left (x^4+{\mathrm {e}}^{-2\,a}\right )}{2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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