Optimal. Leaf size=69 \[ \frac{1}{2 \left (1-\tanh \left (\frac{x}{2}\right )\right )}+\frac{1}{\tanh \left (\frac{x}{2}\right )+1}-\frac{1}{2 \left (\tanh \left (\frac{x}{2}\right )+1\right )^2}+\frac{1}{4} \log \left (1-\tanh \left (\frac{x}{2}\right )\right )+\frac{3}{4} \log \left (\tanh \left (\frac{x}{2}\right )+1\right ) \]
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Rubi [A] time = 0.200526, antiderivative size = 69, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 3, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.2, Rules used = {4397, 12, 894} \[ \frac{1}{2 \left (1-\tanh \left (\frac{x}{2}\right )\right )}+\frac{1}{\tanh \left (\frac{x}{2}\right )+1}-\frac{1}{2 \left (\tanh \left (\frac{x}{2}\right )+1\right )^2}+\frac{1}{4} \log \left (1-\tanh \left (\frac{x}{2}\right )\right )+\frac{3}{4} \log \left (\tanh \left (\frac{x}{2}\right )+1\right ) \]
Antiderivative was successfully verified.
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Rule 4397
Rule 12
Rule 894
Rubi steps
\begin{align*} \int \frac{1+\sinh ^2(x)}{1+\cosh (x)+\sinh (x)} \, dx &=\int \frac{\cosh ^2(x)}{1+\cosh (x)+\sinh (x)} \, dx\\ &=2 \operatorname{Subst}\left (\int \frac{\left (1+x^2\right )^2}{2 (1-x)^2 (1+x)^3} \, dx,x,\tanh \left (\frac{x}{2}\right )\right )\\ &=\operatorname{Subst}\left (\int \frac{\left (1+x^2\right )^2}{(1-x)^2 (1+x)^3} \, dx,x,\tanh \left (\frac{x}{2}\right )\right )\\ &=\operatorname{Subst}\left (\int \left (\frac{1}{2 (-1+x)^2}+\frac{1}{4 (-1+x)}+\frac{1}{(1+x)^3}-\frac{1}{(1+x)^2}+\frac{3}{4 (1+x)}\right ) \, dx,x,\tanh \left (\frac{x}{2}\right )\right )\\ &=\frac{1}{4} \log \left (1-\tanh \left (\frac{x}{2}\right )\right )+\frac{3}{4} \log \left (1+\tanh \left (\frac{x}{2}\right )\right )+\frac{1}{2 \left (1-\tanh \left (\frac{x}{2}\right )\right )}-\frac{1}{2 \left (1+\tanh \left (\frac{x}{2}\right )\right )^2}+\frac{1}{1+\tanh \left (\frac{x}{2}\right )}\\ \end{align*}
Mathematica [A] time = 0.0344364, size = 37, normalized size = 0.54 \[ \frac{x}{4}+\frac{1}{8} \sinh (2 x)+\frac{\cosh (x)}{2}-\frac{1}{8} \cosh (2 x)-\log \left (\cosh \left (\frac{x}{2}\right )\right ) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.039, size = 48, normalized size = 0.7 \begin{align*} -{\frac{1}{2} \left ( \tanh \left ({\frac{x}{2}} \right ) +1 \right ) ^{-2}}+ \left ( \tanh \left ({\frac{x}{2}} \right ) +1 \right ) ^{-1}+{\frac{3}{4}\ln \left ( \tanh \left ({\frac{x}{2}} \right ) +1 \right ) }-{\frac{1}{2} \left ( \tanh \left ({\frac{x}{2}} \right ) -1 \right ) ^{-1}}+{\frac{1}{4}\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 = 1.05191, size = 39, normalized size = 0.57 \begin{align*} -\frac{1}{4} \, x + \frac{1}{4} \, e^{\left (-x\right )} - \frac{1}{8} \, e^{\left (-2 \, x\right )} + \frac{1}{4} \, e^{x} - \log \left (e^{\left (-x\right )} + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.03597, size = 346, normalized size = 5.01 \begin{align*} \frac{6 \, x \cosh \left (x\right )^{2} + 2 \, \cosh \left (x\right )^{3} + 6 \,{\left (x + \cosh \left (x\right )\right )} \sinh \left (x\right )^{2} + 2 \, \sinh \left (x\right )^{3} - 8 \,{\left (\cosh \left (x\right )^{2} + 2 \, \cosh \left (x\right ) \sinh \left (x\right ) + \sinh \left (x\right )^{2}\right )} \log \left (\cosh \left (x\right ) + \sinh \left (x\right ) + 1\right ) + 2 \,{\left (6 \, x \cosh \left (x\right ) + 3 \, \cosh \left (x\right )^{2} + 1\right )} \sinh \left (x\right ) + 2 \, \cosh \left (x\right ) - 1}{8 \,{\left (\cosh \left (x\right )^{2} + 2 \, \cosh \left (x\right ) \sinh \left (x\right ) + \sinh \left (x\right )^{2}\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] time = 1.41054, size = 382, normalized size = 5.54 \begin{align*} - \frac{x \tanh ^{3}{\left (\frac{x}{2} \right )}}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} - \frac{x \tanh ^{2}{\left (\frac{x}{2} \right )}}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} + \frac{x \tanh{\left (\frac{x}{2} \right )}}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} + \frac{x}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} + \frac{4 \log{\left (\tanh{\left (\frac{x}{2} \right )} + 1 \right )} \tanh ^{3}{\left (\frac{x}{2} \right )}}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} + \frac{4 \log{\left (\tanh{\left (\frac{x}{2} \right )} + 1 \right )} \tanh ^{2}{\left (\frac{x}{2} \right )}}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} - \frac{4 \log{\left (\tanh{\left (\frac{x}{2} \right )} + 1 \right )} \tanh{\left (\frac{x}{2} \right )}}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} - \frac{4 \log{\left (\tanh{\left (\frac{x}{2} \right )} + 1 \right )}}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} - \frac{6 \tanh ^{3}{\left (\frac{x}{2} \right )}}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} - \frac{4 \tanh ^{2}{\left (\frac{x}{2} \right )}}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} + \frac{2}{4 \tanh ^{3}{\left (\frac{x}{2} \right )} + 4 \tanh ^{2}{\left (\frac{x}{2} \right )} - 4 \tanh{\left (\frac{x}{2} \right )} - 4} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.12233, size = 36, normalized size = 0.52 \begin{align*} \frac{1}{8} \,{\left (2 \, e^{x} - 1\right )} e^{\left (-2 \, x\right )} + \frac{3}{4} \, x + \frac{1}{4} \, e^{x} - \log \left (e^{x} + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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