Integrand size = 7, antiderivative size = 35 \[ \int \log \left (a \text {csch}^2(x)\right ) \, dx=-x^2+2 x \log \left (1-e^{2 x}\right )+x \log \left (a \text {csch}^2(x)\right )+\operatorname {PolyLog}\left (2,e^{2 x}\right ) \]
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Time = 0.04 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.857, Rules used = {2628, 12, 3797, 2221, 2317, 2438} \[ \int \log \left (a \text {csch}^2(x)\right ) \, dx=x \log \left (a \text {csch}^2(x)\right )+\operatorname {PolyLog}\left (2,e^{2 x}\right )-x^2+2 x \log \left (1-e^{2 x}\right ) \]
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Rule 12
Rule 2221
Rule 2317
Rule 2438
Rule 2628
Rule 3797
Rubi steps \begin{align*} \text {integral}& = x \log \left (a \text {csch}^2(x)\right )-\int -2 x \coth (x) \, dx \\ & = x \log \left (a \text {csch}^2(x)\right )+2 \int x \coth (x) \, dx \\ & = -x^2+x \log \left (a \text {csch}^2(x)\right )-4 \int \frac {e^{2 x} x}{1-e^{2 x}} \, dx \\ & = -x^2+2 x \log \left (1-e^{2 x}\right )+x \log \left (a \text {csch}^2(x)\right )-2 \int \log \left (1-e^{2 x}\right ) \, dx \\ & = -x^2+2 x \log \left (1-e^{2 x}\right )+x \log \left (a \text {csch}^2(x)\right )-\text {Subst}\left (\int \frac {\log (1-x)}{x} \, dx,x,e^{2 x}\right ) \\ & = -x^2+2 x \log \left (1-e^{2 x}\right )+x \log \left (a \text {csch}^2(x)\right )+\text {Li}_2\left (e^{2 x}\right ) \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 33, normalized size of antiderivative = 0.94 \[ \int \log \left (a \text {csch}^2(x)\right ) \, dx=x \left (x+2 \log \left (1-e^{-2 x}\right )+\log \left (a \text {csch}^2(x)\right )\right )-\operatorname {PolyLog}\left (2,e^{-2 x}\right ) \]
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 1.44 (sec) , antiderivative size = 456, normalized size of antiderivative = 13.03
method | result | size |
risch | \(\ln \left (a \right ) x -\frac {i \pi \operatorname {csgn}\left (i {\mathrm e}^{x}\right )^{2} \operatorname {csgn}\left (i {\mathrm e}^{2 x}\right ) x}{2}-\frac {i \pi \operatorname {csgn}\left (\frac {i a \,{\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right )^{3} x}{2}+\frac {i \pi {\operatorname {csgn}\left (i \left (-1+{\mathrm e}^{2 x}\right )\right )}^{2} \operatorname {csgn}\left (i \left (-1+{\mathrm e}^{2 x}\right )^{2}\right ) x}{2}+\frac {i \pi \,\operatorname {csgn}\left (\frac {i {\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right ) \operatorname {csgn}\left (\frac {i a \,{\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right )^{2} x}{2}+\frac {i \pi \,\operatorname {csgn}\left (i {\mathrm e}^{2 x}\right ) \operatorname {csgn}\left (\frac {i {\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right )^{2} x}{2}-\frac {i \pi \operatorname {csgn}\left (i {\mathrm e}^{2 x}\right )^{3} x}{2}+2 x \ln \left (2\right )-2 \operatorname {dilog}\left ({\mathrm e}^{x}\right )-x^{2}+\frac {i \pi \,\operatorname {csgn}\left (\frac {i}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right ) \operatorname {csgn}\left (\frac {i {\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right )^{2} x}{2}-i \pi \,\operatorname {csgn}\left (i \left (-1+{\mathrm e}^{2 x}\right )\right ) {\operatorname {csgn}\left (i \left (-1+{\mathrm e}^{2 x}\right )^{2}\right )}^{2} x -\frac {i \pi \,\operatorname {csgn}\left (\frac {i {\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right ) \operatorname {csgn}\left (\frac {i a \,{\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right ) \operatorname {csgn}\left (i a \right ) x}{2}+\frac {i \pi \operatorname {csgn}\left (\frac {i a \,{\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right )^{2} \operatorname {csgn}\left (i a \right ) x}{2}+i \pi \,\operatorname {csgn}\left (i {\mathrm e}^{x}\right ) \operatorname {csgn}\left (i {\mathrm e}^{2 x}\right )^{2} x +2 \operatorname {dilog}\left (1+{\mathrm e}^{x}\right )-\frac {i \pi \operatorname {csgn}\left (\frac {i {\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right )^{3} x}{2}-\frac {i \pi \,\operatorname {csgn}\left (i {\mathrm e}^{2 x}\right ) \operatorname {csgn}\left (\frac {i}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right ) \operatorname {csgn}\left (\frac {i {\mathrm e}^{2 x}}{\left (-1+{\mathrm e}^{2 x}\right )^{2}}\right ) x}{2}+\frac {i \pi {\operatorname {csgn}\left (i \left (-1+{\mathrm e}^{2 x}\right )^{2}\right )}^{3} x}{2}+2 \ln \left ({\mathrm e}^{x}\right ) \ln \left (1+{\mathrm e}^{x}\right )+2 x \ln \left ({\mathrm e}^{x}\right )-2 \ln \left ({\mathrm e}^{x}\right ) \ln \left (-1+{\mathrm e}^{2 x}\right )\) | \(456\) |
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Leaf count of result is larger than twice the leaf count of optimal. 97 vs. \(2 (32) = 64\).
Time = 0.32 (sec) , antiderivative size = 97, normalized size of antiderivative = 2.77 \[ \int \log \left (a \text {csch}^2(x)\right ) \, dx=-x^{2} + x \log \left (\frac {4 \, {\left (a \cosh \left (x\right ) + a \sinh \left (x\right )\right )}}{\cosh \left (x\right )^{3} + 3 \, \cosh \left (x\right ) \sinh \left (x\right )^{2} + \sinh \left (x\right )^{3} + 3 \, {\left (\cosh \left (x\right )^{2} - 1\right )} \sinh \left (x\right ) - \cosh \left (x\right )}\right ) + 2 \, x \log \left (\cosh \left (x\right ) + \sinh \left (x\right ) + 1\right ) + 2 \, x \log \left (-\cosh \left (x\right ) - \sinh \left (x\right ) + 1\right ) + 2 \, {\rm Li}_2\left (\cosh \left (x\right ) + \sinh \left (x\right )\right ) + 2 \, {\rm Li}_2\left (-\cosh \left (x\right ) - \sinh \left (x\right )\right ) \]
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\[ \int \log \left (a \text {csch}^2(x)\right ) \, dx=\int \log {\left (a \operatorname {csch}^{2}{\left (x \right )} \right )}\, dx \]
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Time = 0.24 (sec) , antiderivative size = 45, normalized size of antiderivative = 1.29 \[ \int \log \left (a \text {csch}^2(x)\right ) \, dx=-x^{2} + x \log \left (a \operatorname {csch}\left (x\right )^{2}\right ) + 2 \, x \log \left (e^{x} + 1\right ) + 2 \, x \log \left (-e^{x} + 1\right ) + 2 \, {\rm Li}_2\left (-e^{x}\right ) + 2 \, {\rm Li}_2\left (e^{x}\right ) \]
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\[ \int \log \left (a \text {csch}^2(x)\right ) \, dx=\int { \log \left (a \operatorname {csch}\left (x\right )^{2}\right ) \,d x } \]
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Timed out. \[ \int \log \left (a \text {csch}^2(x)\right ) \, dx=\int \ln \left (\frac {a}{{\mathrm {sinh}\left (x\right )}^2}\right ) \,d x \]
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