Optimal. Leaf size=101 \[ \frac {a^2 b x}{\left (a^2-b^2\right )^2}+\frac {b x}{2 \left (a^2-b^2\right )}+\frac {a \sinh ^2(x)}{2 \left (a^2-b^2\right )}-\frac {b \sinh (x) \cosh (x)}{2 \left (a^2-b^2\right )}-\frac {a^3 \log (a \cosh (x)+b \sinh (x))}{\left (a^2-b^2\right )^2} \]
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Rubi [A] time = 0.13, antiderivative size = 101, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.312, Rules used = {3099, 3097, 3133, 2635, 8} \[ \frac {a^2 b x}{\left (a^2-b^2\right )^2}+\frac {b x}{2 \left (a^2-b^2\right )}+\frac {a \sinh ^2(x)}{2 \left (a^2-b^2\right )}-\frac {b \sinh (x) \cosh (x)}{2 \left (a^2-b^2\right )}-\frac {a^3 \log (a \cosh (x)+b \sinh (x))}{\left (a^2-b^2\right )^2} \]
Antiderivative was successfully verified.
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Rule 8
Rule 2635
Rule 3097
Rule 3099
Rule 3133
Rubi steps
\begin {align*} \int \frac {\sinh ^3(x)}{a \cosh (x)+b \sinh (x)} \, dx &=\frac {a \sinh ^2(x)}{2 \left (a^2-b^2\right )}-\frac {a^2 \int \frac {\sinh (x)}{a \cosh (x)+b \sinh (x)} \, dx}{a^2-b^2}-\frac {b \int \sinh ^2(x) \, dx}{a^2-b^2}\\ &=\frac {a^2 b x}{\left (a^2-b^2\right )^2}-\frac {b \cosh (x) \sinh (x)}{2 \left (a^2-b^2\right )}+\frac {a \sinh ^2(x)}{2 \left (a^2-b^2\right )}-\frac {\left (i a^3\right ) \int \frac {-i b \cosh (x)-i a \sinh (x)}{a \cosh (x)+b \sinh (x)} \, dx}{\left (a^2-b^2\right )^2}+\frac {b \int 1 \, dx}{2 \left (a^2-b^2\right )}\\ &=\frac {a^2 b x}{\left (a^2-b^2\right )^2}+\frac {b x}{2 \left (a^2-b^2\right )}-\frac {a^3 \log (a \cosh (x)+b \sinh (x))}{\left (a^2-b^2\right )^2}-\frac {b \cosh (x) \sinh (x)}{2 \left (a^2-b^2\right )}+\frac {a \sinh ^2(x)}{2 \left (a^2-b^2\right )}\\ \end {align*}
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Mathematica [A] time = 0.16, size = 75, normalized size = 0.74 \[ \frac {-4 a^3 \log (a \cosh (x)+b \sinh (x))+\left (b^3-a^2 b\right ) \sinh (2 x)+a \left (a^2-b^2\right ) \cosh (2 x)+6 a^2 b x-2 b^3 x}{4 (a-b)^2 (a+b)^2} \]
Antiderivative was successfully verified.
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fricas [B] time = 0.43, size = 337, normalized size = 3.34 \[ \frac {{\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \relax (x)^{4} + 4 \, {\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \relax (x) \sinh \relax (x)^{3} + {\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \sinh \relax (x)^{4} + 4 \, {\left (2 \, a^{3} + 3 \, a^{2} b - b^{3}\right )} x \cosh \relax (x)^{2} + a^{3} + a^{2} b - a b^{2} - b^{3} + 2 \, {\left (3 \, {\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \relax (x)^{2} + 2 \, {\left (2 \, a^{3} + 3 \, a^{2} b - b^{3}\right )} x\right )} \sinh \relax (x)^{2} - 8 \, {\left (a^{3} \cosh \relax (x)^{2} + 2 \, a^{3} \cosh \relax (x) \sinh \relax (x) + a^{3} \sinh \relax (x)^{2}\right )} \log \left (\frac {2 \, {\left (a \cosh \relax (x) + b \sinh \relax (x)\right )}}{\cosh \relax (x) - \sinh \relax (x)}\right ) + 4 \, {\left ({\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \relax (x)^{3} + 2 \, {\left (2 \, a^{3} + 3 \, a^{2} b - b^{3}\right )} x \cosh \relax (x)\right )} \sinh \relax (x)}{8 \, {\left ({\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \cosh \relax (x)^{2} + 2 \, {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \cosh \relax (x) \sinh \relax (x) + {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \sinh \relax (x)^{2}\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.14, size = 114, normalized size = 1.13 \[ -\frac {a^{3} \log \left ({\left | a e^{\left (2 \, x\right )} + b e^{\left (2 \, x\right )} + a - b \right |}\right )}{a^{4} - 2 \, a^{2} b^{2} + b^{4}} + \frac {{\left (2 \, a - b\right )} x}{2 \, {\left (a^{2} - 2 \, a b + b^{2}\right )}} - \frac {{\left (4 \, a e^{\left (2 \, x\right )} - 2 \, b e^{\left (2 \, x\right )} - a + b\right )} e^{\left (-2 \, x\right )}}{8 \, {\left (a^{2} - 2 \, a b + b^{2}\right )}} + \frac {e^{\left (2 \, x\right )}}{8 \, {\left (a + b\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.22, size = 175, normalized size = 1.73 \[ \frac {8}{\left (16 a +16 b \right ) \left (\tanh \left (\frac {x}{2}\right )-1\right )^{2}}+\frac {16}{\left (32 a +32 b \right ) \left (\tanh \left (\frac {x}{2}\right )-1\right )}+\frac {\ln \left (\tanh \left (\frac {x}{2}\right )-1\right ) a}{\left (a +b \right )^{2}}+\frac {\ln \left (\tanh \left (\frac {x}{2}\right )-1\right ) b}{2 \left (a +b \right )^{2}}-\frac {a^{3} \ln \left (a +2 \tanh \left (\frac {x}{2}\right ) b +a \left (\tanh ^{2}\left (\frac {x}{2}\right )\right )\right )}{\left (a -b \right )^{2} \left (a +b \right )^{2}}-\frac {16}{\left (32 a -32 b \right ) \left (\tanh \left (\frac {x}{2}\right )+1\right )}+\frac {8}{\left (16 a -16 b \right ) \left (\tanh \left (\frac {x}{2}\right )+1\right )^{2}}+\frac {\ln \left (\tanh \left (\frac {x}{2}\right )+1\right ) a}{\left (a -b \right )^{2}}-\frac {\ln \left (\tanh \left (\frac {x}{2}\right )+1\right ) b}{2 \left (a -b \right )^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.56, size = 87, normalized size = 0.86 \[ -\frac {a^{3} \log \left (-{\left (a - b\right )} e^{\left (-2 \, x\right )} - a - b\right )}{a^{4} - 2 \, a^{2} b^{2} + b^{4}} - \frac {{\left (2 \, a + b\right )} x}{2 \, {\left (a^{2} + 2 \, a b + b^{2}\right )}} + \frac {e^{\left (2 \, x\right )}}{8 \, {\left (a + b\right )}} + \frac {e^{\left (-2 \, x\right )}}{8 \, {\left (a - b\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 1.96, size = 86, normalized size = 0.85 \[ \frac {{\mathrm {e}}^{-2\,x}}{8\,a-8\,b}+\frac {{\mathrm {e}}^{2\,x}}{8\,a+8\,b}-\frac {a^3\,\ln \left (a-b+a\,{\mathrm {e}}^{2\,x}+b\,{\mathrm {e}}^{2\,x}\right )}{a^4-2\,a^2\,b^2+b^4}+\frac {x\,\left (2\,a-b\right )}{2\,{\left (a-b\right )}^2} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Timed out} \]
Verification of antiderivative is not currently implemented for this CAS.
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