Integrand size = 13, antiderivative size = 34 \[ \int \coth ^2(x) \sqrt {1+\coth (x)} \, dx=\sqrt {2} \text {arctanh}\left (\frac {\sqrt {1+\coth (x)}}{\sqrt {2}}\right )-\frac {2}{3} (1+\coth (x))^{3/2} \]
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Time = 0.04 (sec) , antiderivative size = 34, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.231, Rules used = {3624, 3561, 212} \[ \int \coth ^2(x) \sqrt {1+\coth (x)} \, dx=\sqrt {2} \text {arctanh}\left (\frac {\sqrt {\coth (x)+1}}{\sqrt {2}}\right )-\frac {2}{3} (\coth (x)+1)^{3/2} \]
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Rule 212
Rule 3561
Rule 3624
Rubi steps \begin{align*} \text {integral}& = -\frac {2}{3} (1+\coth (x))^{3/2}+\int \sqrt {1+\coth (x)} \, dx \\ & = -\frac {2}{3} (1+\coth (x))^{3/2}+2 \text {Subst}\left (\int \frac {1}{2-x^2} \, dx,x,\sqrt {1+\coth (x)}\right ) \\ & = \sqrt {2} \text {arctanh}\left (\frac {\sqrt {1+\coth (x)}}{\sqrt {2}}\right )-\frac {2}{3} (1+\coth (x))^{3/2} \\ \end{align*}
Time = 0.81 (sec) , antiderivative size = 37, normalized size of antiderivative = 1.09 \[ \int \coth ^2(x) \sqrt {1+\coth (x)} \, dx=-2 \left (-\frac {\text {arctanh}\left (\frac {\sqrt {1+\coth (x)}}{\sqrt {2}}\right )}{\sqrt {2}}+\frac {1}{3} (1+\coth (x))^{3/2}\right ) \]
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Time = 0.08 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.76
method | result | size |
derivativedivides | \(-\frac {2 \left (1+\coth \left (x \right )\right )^{\frac {3}{2}}}{3}+\operatorname {arctanh}\left (\frac {\sqrt {1+\coth \left (x \right )}\, \sqrt {2}}{2}\right ) \sqrt {2}\) | \(26\) |
default | \(-\frac {2 \left (1+\coth \left (x \right )\right )^{\frac {3}{2}}}{3}+\operatorname {arctanh}\left (\frac {\sqrt {1+\coth \left (x \right )}\, \sqrt {2}}{2}\right ) \sqrt {2}\) | \(26\) |
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Leaf count of result is larger than twice the leaf count of optimal. 242 vs. \(2 (25) = 50\).
Time = 0.26 (sec) , antiderivative size = 242, normalized size of antiderivative = 7.12 \[ \int \coth ^2(x) \sqrt {1+\coth (x)} \, dx=-\frac {8 \, \sqrt {2} {\left (\sqrt {2} \cosh \left (x\right )^{3} + 3 \, \sqrt {2} \cosh \left (x\right )^{2} \sinh \left (x\right ) + 3 \, \sqrt {2} \cosh \left (x\right ) \sinh \left (x\right )^{2} + \sqrt {2} \sinh \left (x\right )^{3}\right )} \sqrt {\frac {\sinh \left (x\right )}{\cosh \left (x\right ) - \sinh \left (x\right )}} - 3 \, {\left (\sqrt {2} \cosh \left (x\right )^{4} + 4 \, \sqrt {2} \cosh \left (x\right ) \sinh \left (x\right )^{3} + \sqrt {2} \sinh \left (x\right )^{4} + 2 \, {\left (3 \, \sqrt {2} \cosh \left (x\right )^{2} - \sqrt {2}\right )} \sinh \left (x\right )^{2} - 2 \, \sqrt {2} \cosh \left (x\right )^{2} + 4 \, {\left (\sqrt {2} \cosh \left (x\right )^{3} - \sqrt {2} \cosh \left (x\right )\right )} \sinh \left (x\right ) + \sqrt {2}\right )} \log \left (2 \, \sqrt {2} \sqrt {\frac {\sinh \left (x\right )}{\cosh \left (x\right ) - \sinh \left (x\right )}} {\left (\cosh \left (x\right ) + \sinh \left (x\right )\right )} + 2 \, \cosh \left (x\right )^{2} + 4 \, \cosh \left (x\right ) \sinh \left (x\right ) + 2 \, \sinh \left (x\right )^{2} - 1\right )}{6 \, {\left (\cosh \left (x\right )^{4} + 4 \, \cosh \left (x\right ) \sinh \left (x\right )^{3} + \sinh \left (x\right )^{4} + 2 \, {\left (3 \, \cosh \left (x\right )^{2} - 1\right )} \sinh \left (x\right )^{2} - 2 \, \cosh \left (x\right )^{2} + 4 \, {\left (\cosh \left (x\right )^{3} - \cosh \left (x\right )\right )} \sinh \left (x\right ) + 1\right )}} \]
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\[ \int \coth ^2(x) \sqrt {1+\coth (x)} \, dx=\int \sqrt {\coth {\left (x \right )} + 1} \coth ^{2}{\left (x \right )}\, dx \]
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\[ \int \coth ^2(x) \sqrt {1+\coth (x)} \, dx=\int { \sqrt {\coth \left (x\right ) + 1} \coth \left (x\right )^{2} \,d x } \]
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Leaf count of result is larger than twice the leaf count of optimal. 133 vs. \(2 (25) = 50\).
Time = 0.30 (sec) , antiderivative size = 133, normalized size of antiderivative = 3.91 \[ \int \coth ^2(x) \sqrt {1+\coth (x)} \, dx=-\frac {1}{6} \, \sqrt {2} {\left (3 \, \log \left ({\left | 2 \, \sqrt {e^{\left (4 \, x\right )} - e^{\left (2 \, x\right )}} - 2 \, e^{\left (2 \, x\right )} + 1 \right |}\right ) \mathrm {sgn}\left (e^{\left (2 \, x\right )} - 1\right ) + \frac {8 \, {\left (3 \, {\left (\sqrt {e^{\left (4 \, x\right )} - e^{\left (2 \, x\right )}} - e^{\left (2 \, x\right )}\right )}^{2} \mathrm {sgn}\left (e^{\left (2 \, x\right )} - 1\right ) + 3 \, {\left (\sqrt {e^{\left (4 \, x\right )} - e^{\left (2 \, x\right )}} - e^{\left (2 \, x\right )}\right )} \mathrm {sgn}\left (e^{\left (2 \, x\right )} - 1\right ) + \mathrm {sgn}\left (e^{\left (2 \, x\right )} - 1\right )\right )}}{{\left (\sqrt {e^{\left (4 \, x\right )} - e^{\left (2 \, x\right )}} - e^{\left (2 \, x\right )} + 1\right )}^{3}}\right )} \]
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Time = 1.96 (sec) , antiderivative size = 25, normalized size of antiderivative = 0.74 \[ \int \coth ^2(x) \sqrt {1+\coth (x)} \, dx=\sqrt {2}\,\mathrm {atanh}\left (\frac {\sqrt {2}\,\sqrt {\mathrm {coth}\left (x\right )+1}}{2}\right )-\frac {2\,{\left (\mathrm {coth}\left (x\right )+1\right )}^{3/2}}{3} \]
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