Optimal. Leaf size=102 \[ \frac{a^2 b x}{\left (a^2-b^2\right )^2}-\frac{b x}{2 \left (a^2-b^2\right )}+\frac{a \sinh ^2(x)}{2 \left (a^2-b^2\right )}-\frac{b \sinh (x) \cosh (x)}{2 \left (a^2-b^2\right )}-\frac{a b^2 \log (a \cosh (x)+b \sinh (x))}{\left (a^2-b^2\right )^2} \]
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Rubi [A] time = 0.162841, antiderivative size = 102, normalized size of antiderivative = 1., number of steps used = 7, number of rules used = 7, integrand size = 18, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.389, Rules used = {3109, 2635, 8, 2564, 30, 3098, 3133} \[ \frac{a^2 b x}{\left (a^2-b^2\right )^2}-\frac{b x}{2 \left (a^2-b^2\right )}+\frac{a \sinh ^2(x)}{2 \left (a^2-b^2\right )}-\frac{b \sinh (x) \cosh (x)}{2 \left (a^2-b^2\right )}-\frac{a b^2 \log (a \cosh (x)+b \sinh (x))}{\left (a^2-b^2\right )^2} \]
Antiderivative was successfully verified.
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Rule 3109
Rule 2635
Rule 8
Rule 2564
Rule 30
Rule 3098
Rule 3133
Rubi steps
\begin{align*} \int \frac{\cosh ^2(x) \sinh (x)}{a \cosh (x)+b \sinh (x)} \, dx &=\frac{a \int \cosh (x) \sinh (x) \, dx}{a^2-b^2}-\frac{b \int \cosh ^2(x) \, dx}{a^2-b^2}+\frac{(a b) \int \frac{\cosh (x)}{a \cosh (x)+b \sinh (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{\left (i a b^2\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{a \operatorname{Subst}(\int x \, dx,x,i \sinh (x))}{a^2-b^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 b^2 \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*}
Mathematica [A] time = 0.223209, size = 73, normalized size = 0.72 \[ \frac{a \left (a^2-b^2\right ) \cosh (2 x)+b \left (2 x \left (a^2+b^2\right )+\left (b^2-a^2\right ) \sinh (2 x)-4 a b \log (a \cosh (x)+b \sinh (x))\right )}{4 (a-b)^2 (a+b)^2} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.04, size = 146, normalized size = 1.4 \begin{align*} -4\,{\frac{1}{ \left ( 8\,a-8\,b \right ) \left ( \tanh \left ( x/2 \right ) +1 \right ) }}+2\,{\frac{1}{ \left ( 4\,a-4\,b \right ) \left ( \tanh \left ( x/2 \right ) +1 \right ) ^{2}}}+{\frac{b}{2\, \left ( a-b \right ) ^{2}}\ln \left ( \tanh \left ({\frac{x}{2}} \right ) +1 \right ) }-{\frac{a{b}^{2}}{ \left ( a-b \right ) ^{2} \left ( a+b \right ) ^{2}}\ln \left ( a+2\,\tanh \left ( x/2 \right ) b+a \left ( \tanh \left ({\frac{x}{2}} \right ) \right ) ^{2} \right ) }+2\,{\frac{1}{ \left ( 4\,a+4\,b \right ) \left ( \tanh \left ( x/2 \right ) -1 \right ) ^{2}}}+4\,{\frac{1}{ \left ( 8\,a+8\,b \right ) \left ( \tanh \left ( x/2 \right ) -1 \right ) }}-{\frac{b}{2\, \left ( a+b \right ) ^{2}}\ln \left ( \tanh \left ({\frac{x}{2}} \right ) -1 \right ) } \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.17835, size = 113, normalized size = 1.11 \begin{align*} -\frac{a b^{2} \log \left (-{\left (a - b\right )} e^{\left (-2 \, x\right )} - a - b\right )}{a^{4} - 2 \, a^{2} b^{2} + b^{4}} + \frac{b 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 )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 1.83732, size = 826, normalized size = 8.1 \begin{align*} \frac{{\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \left (x\right )^{4} + 4 \,{\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \left (x\right ) \sinh \left (x\right )^{3} +{\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \sinh \left (x\right )^{4} + 4 \,{\left (a^{2} b + 2 \, a b^{2} + b^{3}\right )} x \cosh \left (x\right )^{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 \left (x\right )^{2} + 2 \,{\left (a^{2} b + 2 \, a b^{2} + b^{3}\right )} x\right )} \sinh \left (x\right )^{2} - 8 \,{\left (a b^{2} \cosh \left (x\right )^{2} + 2 \, a b^{2} \cosh \left (x\right ) \sinh \left (x\right ) + a b^{2} \sinh \left (x\right )^{2}\right )} \log \left (\frac{2 \,{\left (a \cosh \left (x\right ) + b \sinh \left (x\right )\right )}}{\cosh \left (x\right ) - \sinh \left (x\right )}\right ) + 4 \,{\left ({\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \left (x\right )^{3} + 2 \,{\left (a^{2} b + 2 \, a b^{2} + b^{3}\right )} x \cosh \left (x\right )\right )} \sinh \left (x\right )}{8 \,{\left ({\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \cosh \left (x\right )^{2} + 2 \,{\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \cosh \left (x\right ) \sinh \left (x\right ) +{\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \sinh \left (x\right )^{2}\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.14789, size = 138, normalized size = 1.35 \begin{align*} -\frac{a b^{2} \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{b x}{2 \,{\left (a^{2} - 2 \, a b + b^{2}\right )}} - \frac{{\left (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 )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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