Integrand size = 11, antiderivative size = 43 \[ \int \frac {\tanh ^5(x)}{1+\tanh (x)} \, dx=\frac {5 x}{2}-2 \log (\cosh (x))-\frac {5 \tanh (x)}{2}+\tanh ^2(x)-\frac {5 \tanh ^3(x)}{6}+\frac {\tanh ^4(x)}{2 (1+\tanh (x))} \]
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Time = 0.07 (sec) , antiderivative size = 43, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.364, Rules used = {3631, 3609, 3606, 3556} \[ \int \frac {\tanh ^5(x)}{1+\tanh (x)} \, dx=\frac {5 x}{2}+\frac {\tanh ^4(x)}{2 (\tanh (x)+1)}-\frac {5 \tanh ^3(x)}{6}+\tanh ^2(x)-\frac {5 \tanh (x)}{2}-2 \log (\cosh (x)) \]
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Rule 3556
Rule 3606
Rule 3609
Rule 3631
Rubi steps \begin{align*} \text {integral}& = \frac {\tanh ^4(x)}{2 (1+\tanh (x))}-\frac {1}{2} \int (4-5 \tanh (x)) \tanh ^3(x) \, dx \\ & = -\frac {5}{6} \tanh ^3(x)+\frac {\tanh ^4(x)}{2 (1+\tanh (x))}+\frac {1}{2} i \int (-5 i+4 i \tanh (x)) \tanh ^2(x) \, dx \\ & = \tanh ^2(x)-\frac {5 \tanh ^3(x)}{6}+\frac {\tanh ^4(x)}{2 (1+\tanh (x))}+\frac {1}{2} \int \tanh (x) (-4+5 \tanh (x)) \, dx \\ & = \frac {5 x}{2}-\frac {5 \tanh (x)}{2}+\tanh ^2(x)-\frac {5 \tanh ^3(x)}{6}+\frac {\tanh ^4(x)}{2 (1+\tanh (x))}-2 \int \tanh (x) \, dx \\ & = \frac {5 x}{2}-2 \log (\cosh (x))-\frac {5 \tanh (x)}{2}+\tanh ^2(x)-\frac {5 \tanh ^3(x)}{6}+\frac {\tanh ^4(x)}{2 (1+\tanh (x))} \\ \end{align*}
Time = 0.13 (sec) , antiderivative size = 52, normalized size of antiderivative = 1.21 \[ \int \frac {\tanh ^5(x)}{1+\tanh (x)} \, dx=\frac {-12 \log (\cosh (x))-3 (5+4 \log (\cosh (x))) \tanh (x)-9 \tanh ^2(x)+\tanh ^3(x)-2 \tanh ^4(x)+15 \text {arctanh}(\tanh (x)) (1+\tanh (x))}{6 (1+\tanh (x))} \]
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Time = 0.06 (sec) , antiderivative size = 40, normalized size of antiderivative = 0.93
method | result | size |
derivativedivides | \(-\frac {\tanh \left (x \right )^{3}}{3}+\frac {\tanh \left (x \right )^{2}}{2}-2 \tanh \left (x \right )+\frac {1}{2+2 \tanh \left (x \right )}+\frac {9 \ln \left (1+\tanh \left (x \right )\right )}{4}-\frac {\ln \left (\tanh \left (x \right )-1\right )}{4}\) | \(40\) |
default | \(-\frac {\tanh \left (x \right )^{3}}{3}+\frac {\tanh \left (x \right )^{2}}{2}-2 \tanh \left (x \right )+\frac {1}{2+2 \tanh \left (x \right )}+\frac {9 \ln \left (1+\tanh \left (x \right )\right )}{4}-\frac {\ln \left (\tanh \left (x \right )-1\right )}{4}\) | \(40\) |
risch | \(\frac {9 x}{2}+\frac {{\mathrm e}^{-2 x}}{4}+\frac {4 \,{\mathrm e}^{4 x}+6 \,{\mathrm e}^{2 x}+\frac {14}{3}}{\left (1+{\mathrm e}^{2 x}\right )^{3}}-2 \ln \left (1+{\mathrm e}^{2 x}\right )\) | \(44\) |
parallelrisch | \(-\frac {2 \tanh \left (x \right )^{4}-15-\tanh \left (x \right )^{3}-12 \ln \left (1-\tanh \left (x \right )\right ) \tanh \left (x \right )-27 \tanh \left (x \right ) x +9 \tanh \left (x \right )^{2}-12 \ln \left (1-\tanh \left (x \right )\right )-27 x}{6 \left (1+\tanh \left (x \right )\right )}\) | \(57\) |
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Leaf count of result is larger than twice the leaf count of optimal. 571 vs. \(2 (35) = 70\).
Time = 0.25 (sec) , antiderivative size = 571, normalized size of antiderivative = 13.28 \[ \int \frac {\tanh ^5(x)}{1+\tanh (x)} \, dx=\text {Too large to display} \]
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Leaf count of result is larger than twice the leaf count of optimal. 104 vs. \(2 (42) = 84\).
Time = 0.21 (sec) , antiderivative size = 104, normalized size of antiderivative = 2.42 \[ \int \frac {\tanh ^5(x)}{1+\tanh (x)} \, dx=\frac {3 x \tanh {\left (x \right )}}{6 \tanh {\left (x \right )} + 6} + \frac {3 x}{6 \tanh {\left (x \right )} + 6} + \frac {12 \log {\left (\tanh {\left (x \right )} + 1 \right )} \tanh {\left (x \right )}}{6 \tanh {\left (x \right )} + 6} + \frac {12 \log {\left (\tanh {\left (x \right )} + 1 \right )}}{6 \tanh {\left (x \right )} + 6} - \frac {2 \tanh ^{4}{\left (x \right )}}{6 \tanh {\left (x \right )} + 6} + \frac {\tanh ^{3}{\left (x \right )}}{6 \tanh {\left (x \right )} + 6} - \frac {9 \tanh ^{2}{\left (x \right )}}{6 \tanh {\left (x \right )} + 6} + \frac {15}{6 \tanh {\left (x \right )} + 6} \]
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Time = 0.27 (sec) , antiderivative size = 55, normalized size of antiderivative = 1.28 \[ \int \frac {\tanh ^5(x)}{1+\tanh (x)} \, dx=\frac {1}{2} \, x - \frac {2 \, {\left (15 \, e^{\left (-2 \, x\right )} + 12 \, e^{\left (-4 \, x\right )} + 7\right )}}{3 \, {\left (3 \, e^{\left (-2 \, x\right )} + 3 \, e^{\left (-4 \, x\right )} + e^{\left (-6 \, x\right )} + 1\right )}} + \frac {1}{4} \, e^{\left (-2 \, x\right )} - 2 \, \log \left (e^{\left (-2 \, x\right )} + 1\right ) \]
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Time = 0.26 (sec) , antiderivative size = 47, normalized size of antiderivative = 1.09 \[ \int \frac {\tanh ^5(x)}{1+\tanh (x)} \, dx=\frac {9}{2} \, x + \frac {{\left (51 \, e^{\left (6 \, x\right )} + 81 \, e^{\left (4 \, x\right )} + 65 \, e^{\left (2 \, x\right )} + 3\right )} e^{\left (-2 \, x\right )}}{12 \, {\left (e^{\left (2 \, x\right )} + 1\right )}^{3}} - 2 \, \log \left (e^{\left (2 \, x\right )} + 1\right ) \]
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Time = 0.10 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.81 \[ \int \frac {\tanh ^5(x)}{1+\tanh (x)} \, dx=\frac {x}{2}+2\,\ln \left (\mathrm {tanh}\left (x\right )+1\right )-2\,\mathrm {tanh}\left (x\right )+\frac {{\mathrm {tanh}\left (x\right )}^2}{2}-\frac {{\mathrm {tanh}\left (x\right )}^3}{3}+\frac {1}{2\,\left (\mathrm {tanh}\left (x\right )+1\right )} \]
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