Integrand size = 11, antiderivative size = 37 \[ \int \frac {\coth ^3(x)}{1+\tanh (x)} \, dx=-\frac {3 x}{2}+\frac {3 \coth (x)}{2}-\coth ^2(x)+2 \log (\sinh (x))+\frac {\coth ^2(x)}{2 (1+\tanh (x))} \]
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Time = 0.07 (sec) , antiderivative size = 37, 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 = {3633, 3610, 3612, 3556} \[ \int \frac {\coth ^3(x)}{1+\tanh (x)} \, dx=-\frac {3 x}{2}-\coth ^2(x)+\frac {3 \coth (x)}{2}+2 \log (\sinh (x))+\frac {\coth ^2(x)}{2 (\tanh (x)+1)} \]
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Rule 3556
Rule 3610
Rule 3612
Rule 3633
Rubi steps \begin{align*} \text {integral}& = \frac {\coth ^2(x)}{2 (1+\tanh (x))}-\frac {1}{2} \int \coth ^3(x) (-4+3 \tanh (x)) \, dx \\ & = -\coth ^2(x)+\frac {\coth ^2(x)}{2 (1+\tanh (x))}-\frac {1}{2} i \int \coth ^2(x) (-3 i+4 i \tanh (x)) \, dx \\ & = \frac {3 \coth (x)}{2}-\coth ^2(x)+\frac {\coth ^2(x)}{2 (1+\tanh (x))}+\frac {1}{2} \int \coth (x) (4-3 \tanh (x)) \, dx \\ & = -\frac {3 x}{2}+\frac {3 \coth (x)}{2}-\coth ^2(x)+\frac {\coth ^2(x)}{2 (1+\tanh (x))}+2 \int \coth (x) \, dx \\ & = -\frac {3 x}{2}+\frac {3 \coth (x)}{2}-\coth ^2(x)+2 \log (\sinh (x))+\frac {\coth ^2(x)}{2 (1+\tanh (x))} \\ \end{align*}
Result contains higher order function than in optimal. Order 5 vs. order 3 in optimal.
Time = 0.22 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.46 \[ \int \frac {\coth ^3(x)}{1+\tanh (x)} \, dx=\frac {1}{2} \left (-2 \coth ^2(x)-\coth ^4(x)+\frac {\coth ^5(x)}{1+\coth (x)}+\coth ^3(x) \operatorname {Hypergeometric2F1}\left (-\frac {3}{2},1,-\frac {1}{2},\tanh ^2(x)\right )+4 (\log (\cosh (x))+\log (\tanh (x)))\right ) \]
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Time = 0.21 (sec) , antiderivative size = 30, normalized size of antiderivative = 0.81
method | result | size |
risch | \(-\frac {7 x}{2}+\frac {{\mathrm e}^{-2 x}}{4}-\frac {2}{\left ({\mathrm e}^{2 x}-1\right )^{2}}+2 \ln \left ({\mathrm e}^{2 x}-1\right )\) | \(30\) |
parallelrisch | \(\frac {\left (-4 \tanh \left (x \right )-4\right ) \ln \left (1-\tanh \left (x \right )\right )+\left (4 \tanh \left (x \right )+4\right ) \ln \left (\tanh \left (x \right )\right )-7 \tanh \left (x \right ) x -\coth \left (x \right )^{2}-7 x +\coth \left (x \right )+3}{2+2 \tanh \left (x \right )}\) | \(52\) |
default | \(\frac {1}{\left (\tanh \left (\frac {x}{2}\right )+1\right )^{2}}-\frac {1}{\tanh \left (\frac {x}{2}\right )+1}-\frac {7 \ln \left (\tanh \left (\frac {x}{2}\right )+1\right )}{2}-\frac {\tanh \left (\frac {x}{2}\right )^{2}}{8}+\frac {\tanh \left (\frac {x}{2}\right )}{2}-\frac {1}{8 \tanh \left (\frac {x}{2}\right )^{2}}+\frac {1}{2 \tanh \left (\frac {x}{2}\right )}+2 \ln \left (\tanh \left (\frac {x}{2}\right )\right )-\frac {\ln \left (\tanh \left (\frac {x}{2}\right )-1\right )}{2}\) | \(75\) |
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Leaf count of result is larger than twice the leaf count of optimal. 357 vs. \(2 (31) = 62\).
Time = 0.25 (sec) , antiderivative size = 357, normalized size of antiderivative = 9.65 \[ \int \frac {\coth ^3(x)}{1+\tanh (x)} \, dx=-\frac {14 \, x \cosh \left (x\right )^{6} + 84 \, x \cosh \left (x\right ) \sinh \left (x\right )^{5} + 14 \, x \sinh \left (x\right )^{6} - {\left (28 \, x + 1\right )} \cosh \left (x\right )^{4} + {\left (210 \, x \cosh \left (x\right )^{2} - 28 \, x - 1\right )} \sinh \left (x\right )^{4} + 4 \, {\left (70 \, x \cosh \left (x\right )^{3} - {\left (28 \, x + 1\right )} \cosh \left (x\right )\right )} \sinh \left (x\right )^{3} + 2 \, {\left (7 \, x + 5\right )} \cosh \left (x\right )^{2} + 2 \, {\left (105 \, x \cosh \left (x\right )^{4} - 3 \, {\left (28 \, x + 1\right )} \cosh \left (x\right )^{2} + 7 \, x + 5\right )} \sinh \left (x\right )^{2} - 8 \, {\left (\cosh \left (x\right )^{6} + 6 \, \cosh \left (x\right ) \sinh \left (x\right )^{5} + \sinh \left (x\right )^{6} + {\left (15 \, \cosh \left (x\right )^{2} - 2\right )} \sinh \left (x\right )^{4} - 2 \, \cosh \left (x\right )^{4} + 4 \, {\left (5 \, \cosh \left (x\right )^{3} - 2 \, \cosh \left (x\right )\right )} \sinh \left (x\right )^{3} + {\left (15 \, \cosh \left (x\right )^{4} - 12 \, \cosh \left (x\right )^{2} + 1\right )} \sinh \left (x\right )^{2} + \cosh \left (x\right )^{2} + 2 \, {\left (3 \, \cosh \left (x\right )^{5} - 4 \, \cosh \left (x\right )^{3} + \cosh \left (x\right )\right )} \sinh \left (x\right )\right )} \log \left (\frac {2 \, \sinh \left (x\right )}{\cosh \left (x\right ) - \sinh \left (x\right )}\right ) + 4 \, {\left (21 \, x \cosh \left (x\right )^{5} - {\left (28 \, x + 1\right )} \cosh \left (x\right )^{3} + {\left (7 \, x + 5\right )} \cosh \left (x\right )\right )} \sinh \left (x\right ) - 1}{4 \, {\left (\cosh \left (x\right )^{6} + 6 \, \cosh \left (x\right ) \sinh \left (x\right )^{5} + \sinh \left (x\right )^{6} + {\left (15 \, \cosh \left (x\right )^{2} - 2\right )} \sinh \left (x\right )^{4} - 2 \, \cosh \left (x\right )^{4} + 4 \, {\left (5 \, \cosh \left (x\right )^{3} - 2 \, \cosh \left (x\right )\right )} \sinh \left (x\right )^{3} + {\left (15 \, \cosh \left (x\right )^{4} - 12 \, \cosh \left (x\right )^{2} + 1\right )} \sinh \left (x\right )^{2} + \cosh \left (x\right )^{2} + 2 \, {\left (3 \, \cosh \left (x\right )^{5} - 4 \, \cosh \left (x\right )^{3} + \cosh \left (x\right )\right )} \sinh \left (x\right )\right )}} \]
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\[ \int \frac {\coth ^3(x)}{1+\tanh (x)} \, dx=\int \frac {\coth ^{3}{\left (x \right )}}{\tanh {\left (x \right )} + 1}\, dx \]
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Time = 0.19 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.46 \[ \int \frac {\coth ^3(x)}{1+\tanh (x)} \, dx=\frac {1}{2} \, x + \frac {2 \, {\left (2 \, e^{\left (-2 \, x\right )} - 1\right )}}{2 \, e^{\left (-2 \, x\right )} - e^{\left (-4 \, x\right )} - 1} + \frac {1}{4} \, e^{\left (-2 \, x\right )} + 2 \, \log \left (e^{\left (-x\right )} + 1\right ) + 2 \, \log \left (e^{\left (-x\right )} - 1\right ) \]
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Time = 0.29 (sec) , antiderivative size = 40, normalized size of antiderivative = 1.08 \[ \int \frac {\coth ^3(x)}{1+\tanh (x)} \, dx=-\frac {7}{2} \, x + \frac {{\left (e^{\left (4 \, x\right )} - 10 \, e^{\left (2 \, x\right )} + 1\right )} e^{\left (-2 \, x\right )}}{4 \, {\left (e^{\left (2 \, x\right )} - 1\right )}^{2}} + 2 \, \log \left ({\left | e^{\left (2 \, x\right )} - 1 \right |}\right ) \]
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Time = 0.07 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.95 \[ \int \frac {\coth ^3(x)}{1+\tanh (x)} \, dx=2\,\ln \left ({\mathrm {e}}^{2\,x}-1\right )-\frac {7\,x}{2}+\frac {{\mathrm {e}}^{-2\,x}}{4}-\frac {2}{{\mathrm {e}}^{4\,x}-2\,{\mathrm {e}}^{2\,x}+1} \]
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