Optimal. Leaf size=38 \[ \frac {x}{2}+\frac {1}{6 (\tanh (x)+1)}+\frac {2 \tan ^{-1}\left (\frac {1-2 \tanh (x)}{\sqrt {3}}\right )}{3 \sqrt {3}} \]
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Rubi [A] time = 0.15, antiderivative size = 38, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 4, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {2074, 207, 618, 204} \[ \frac {x}{2}+\frac {1}{6 (\tanh (x)+1)}+\frac {2 \tan ^{-1}\left (\frac {1-2 \tanh (x)}{\sqrt {3}}\right )}{3 \sqrt {3}} \]
Antiderivative was successfully verified.
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Rule 204
Rule 207
Rule 618
Rule 2074
Rubi steps
\begin {align*} \int \frac {\sinh ^3(x)}{\cosh ^3(x)+\sinh ^3(x)} \, dx &=-\operatorname {Subst}\left (\int \frac {x^3}{-1+x^2-x^3+x^5} \, dx,x,\tanh (x)\right )\\ &=-\operatorname {Subst}\left (\int \left (\frac {1}{6 (1+x)^2}+\frac {1}{2 \left (-1+x^2\right )}+\frac {1}{3 \left (1-x+x^2\right )}\right ) \, dx,x,\tanh (x)\right )\\ &=\frac {1}{6 (1+\tanh (x))}-\frac {1}{3} \operatorname {Subst}\left (\int \frac {1}{1-x+x^2} \, dx,x,\tanh (x)\right )-\frac {1}{2} \operatorname {Subst}\left (\int \frac {1}{-1+x^2} \, dx,x,\tanh (x)\right )\\ &=\frac {x}{2}+\frac {1}{6 (1+\tanh (x))}+\frac {2}{3} \operatorname {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,-1+2 \tanh (x)\right )\\ &=\frac {x}{2}+\frac {2 \tan ^{-1}\left (\frac {1-2 \tanh (x)}{\sqrt {3}}\right )}{3 \sqrt {3}}+\frac {1}{6 (1+\tanh (x))}\\ \end {align*}
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Mathematica [A] time = 0.14, size = 40, normalized size = 1.05 \[ \frac {1}{36} \left (18 x-3 \sinh (2 x)+3 \cosh (2 x)-8 \sqrt {3} \tan ^{-1}\left (\frac {2 \tanh (x)-1}{\sqrt {3}}\right )\right ) \]
Antiderivative was successfully verified.
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fricas [B] time = 0.43, size = 95, normalized size = 2.50 \[ \frac {18 \, x \cosh \relax (x)^{2} + 36 \, x \cosh \relax (x) \sinh \relax (x) + 18 \, x \sinh \relax (x)^{2} + 8 \, {\left (\sqrt {3} \cosh \relax (x)^{2} + 2 \, \sqrt {3} \cosh \relax (x) \sinh \relax (x) + \sqrt {3} \sinh \relax (x)^{2}\right )} \arctan \left (-\frac {\sqrt {3} \cosh \relax (x) + \sqrt {3} \sinh \relax (x)}{3 \, {\left (\cosh \relax (x) - \sinh \relax (x)\right )}}\right ) + 3}{36 \, {\left (\cosh \relax (x)^{2} + 2 \, \cosh \relax (x) \sinh \relax (x) + \sinh \relax (x)^{2}\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.13, size = 33, normalized size = 0.87 \[ -\frac {1}{12} \, {\left (3 \, e^{\left (2 \, x\right )} - 1\right )} e^{\left (-2 \, x\right )} - \frac {2}{9} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} e^{\left (2 \, x\right )}\right ) + \frac {1}{2} \, x \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [C] time = 0.24, size = 96, normalized size = 2.53 \[ -\frac {\ln \left (\tanh \left (\frac {x}{2}\right )-1\right )}{2}+\frac {i \sqrt {3}\, \ln \left (\tanh ^{2}\left (\frac {x}{2}\right )+\left (i \sqrt {3}-1\right ) \tanh \left (\frac {x}{2}\right )+1\right )}{9}-\frac {i \sqrt {3}\, \ln \left (\tanh ^{2}\left (\frac {x}{2}\right )+\left (-i \sqrt {3}-1\right ) \tanh \left (\frac {x}{2}\right )+1\right )}{9}+\frac {1}{3 \left (\tanh \left (\frac {x}{2}\right )+1\right )^{2}}-\frac {1}{3 \left (\tanh \left (\frac {x}{2}\right )+1\right )}+\frac {\ln \left (\tanh \left (\frac {x}{2}\right )+1\right )}{2} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [B] time = 0.46, size = 73, normalized size = 1.92 \[ -\frac {2}{9} \, \sqrt {3} \arctan \left (\frac {1}{6} \cdot 3^{\frac {3}{4}} \sqrt {2} {\left (2 \, \sqrt {3} e^{\left (-x\right )} + 3^{\frac {1}{4}} \sqrt {2}\right )}\right ) + \frac {2}{9} \, \sqrt {3} \arctan \left (\frac {1}{6} \cdot 3^{\frac {3}{4}} \sqrt {2} {\left (2 \, \sqrt {3} e^{\left (-x\right )} - 3^{\frac {1}{4}} \sqrt {2}\right )}\right ) + \frac {1}{2} \, x + \frac {1}{12} \, e^{\left (-2 \, x\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 1.74, size = 25, normalized size = 0.66 \[ \frac {x}{2}+\frac {{\mathrm {e}}^{-2\,x}}{12}-\frac {2\,\sqrt {3}\,\mathrm {atan}\left (\frac {\sqrt {3}\,{\mathrm {e}}^{2\,x}}{3}\right )}{9} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [B] time = 1.55, size = 136, normalized size = 3.58 \[ \frac {9 x \sinh {\relax (x )}}{18 \sinh {\relax (x )} + 18 \cosh {\relax (x )}} + \frac {9 x \cosh {\relax (x )}}{18 \sinh {\relax (x )} + 18 \cosh {\relax (x )}} - \frac {4 \sqrt {3} \sinh {\relax (x )} \operatorname {atan}{\left (\frac {\sqrt {3}}{3} - \frac {2 \sqrt {3} \cosh {\relax (x )}}{3 \sinh {\relax (x )}} \right )}}{18 \sinh {\relax (x )} + 18 \cosh {\relax (x )}} - \frac {4 \sqrt {3} \cosh {\relax (x )} \operatorname {atan}{\left (\frac {\sqrt {3}}{3} - \frac {2 \sqrt {3} \cosh {\relax (x )}}{3 \sinh {\relax (x )}} \right )}}{18 \sinh {\relax (x )} + 18 \cosh {\relax (x )}} + \frac {3 \cosh {\relax (x )}}{18 \sinh {\relax (x )} + 18 \cosh {\relax (x )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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