Integrand size = 6, antiderivative size = 16 \[ \int x \tanh ^2(x) \, dx=\frac {x^2}{2}+\log (\cosh (x))-x \tanh (x) \]
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Time = 0.01 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.500, Rules used = {3801, 3556, 30} \[ \int x \tanh ^2(x) \, dx=\frac {x^2}{2}-x \tanh (x)+\log (\cosh (x)) \]
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Rule 30
Rule 3556
Rule 3801
Rubi steps \begin{align*} \text {integral}& = -x \tanh (x)+\int x \, dx+\int \tanh (x) \, dx \\ & = \frac {x^2}{2}+\log (\cosh (x))-x \tanh (x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00 \[ \int x \tanh ^2(x) \, dx=\frac {x^2}{2}+\log (\cosh (x))-x \tanh (x) \]
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Time = 0.04 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.50
method | result | size |
parallelrisch | \(\frac {x^{2}}{2}-x \tanh \left (x \right )-x -\ln \left (1-\tanh \left (x \right )\right )\) | \(24\) |
risch | \(\frac {x^{2}}{2}-2 x +\frac {2 x}{1+{\mathrm e}^{2 x}}+\ln \left (1+{\mathrm e}^{2 x}\right )\) | \(28\) |
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Leaf count of result is larger than twice the leaf count of optimal. 93 vs. \(2 (14) = 28\).
Time = 0.25 (sec) , antiderivative size = 93, normalized size of antiderivative = 5.81 \[ \int x \tanh ^2(x) \, dx=\frac {{\left (x^{2} - 4 \, x\right )} \cosh \left (x\right )^{2} + 2 \, {\left (x^{2} - 4 \, x\right )} \cosh \left (x\right ) \sinh \left (x\right ) + {\left (x^{2} - 4 \, x\right )} \sinh \left (x\right )^{2} + x^{2} + 2 \, {\left (\cosh \left (x\right )^{2} + 2 \, \cosh \left (x\right ) \sinh \left (x\right ) + \sinh \left (x\right )^{2} + 1\right )} \log \left (\frac {2 \, \cosh \left (x\right )}{\cosh \left (x\right ) - \sinh \left (x\right )}\right )}{2 \, {\left (\cosh \left (x\right )^{2} + 2 \, \cosh \left (x\right ) \sinh \left (x\right ) + \sinh \left (x\right )^{2} + 1\right )}} \]
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Time = 0.06 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.06 \[ \int x \tanh ^2(x) \, dx=\frac {x^{2}}{2} - x \tanh {\left (x \right )} + x - \log {\left (\tanh {\left (x \right )} + 1 \right )} \]
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Leaf count of result is larger than twice the leaf count of optimal. 49 vs. \(2 (14) = 28\).
Time = 0.31 (sec) , antiderivative size = 49, normalized size of antiderivative = 3.06 \[ \int x \tanh ^2(x) \, dx=-\frac {x e^{\left (2 \, x\right )}}{e^{\left (2 \, x\right )} + 1} + \frac {x^{2} + {\left (x^{2} - 2 \, x\right )} e^{\left (2 \, x\right )}}{2 \, {\left (e^{\left (2 \, x\right )} + 1\right )}} + \log \left (e^{\left (2 \, x\right )} + 1\right ) \]
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Leaf count of result is larger than twice the leaf count of optimal. 51 vs. \(2 (14) = 28\).
Time = 0.30 (sec) , antiderivative size = 51, normalized size of antiderivative = 3.19 \[ \int x \tanh ^2(x) \, dx=\frac {x^{2} e^{\left (2 \, x\right )} + x^{2} - 4 \, x e^{\left (2 \, x\right )} + 2 \, e^{\left (2 \, x\right )} \log \left (e^{\left (2 \, x\right )} + 1\right ) + 2 \, \log \left (e^{\left (2 \, x\right )} + 1\right )}{2 \, {\left (e^{\left (2 \, x\right )} + 1\right )}} \]
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Time = 0.43 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.31 \[ \int x \tanh ^2(x) \, dx=\ln \left ({\mathrm {e}}^{2\,x}+1\right )-x-x\,\mathrm {tanh}\left (x\right )+\frac {x^2}{2} \]
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