Integrand size = 11, antiderivative size = 64 \[ \int \frac {\text {sech}(x)}{a+b \text {csch}(x)} \, dx=\frac {\log (i-\sinh (x))}{2 (i a+b)}-\frac {\log (i+\sinh (x))}{2 (i a-b)}-\frac {b \log (b+a \sinh (x))}{a^2+b^2} \]
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Time = 0.08 (sec) , antiderivative size = 64, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.273, Rules used = {3957, 2800, 815} \[ \int \frac {\text {sech}(x)}{a+b \text {csch}(x)} \, dx=-\frac {b \log (a \sinh (x)+b)}{a^2+b^2}+\frac {\log (-\sinh (x)+i)}{2 (b+i a)}-\frac {\log (\sinh (x)+i)}{2 (-b+i a)} \]
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Rule 815
Rule 2800
Rule 3957
Rubi steps \begin{align*} \text {integral}& = i \int \frac {\tanh (x)}{i b+i a \sinh (x)} \, dx \\ & = -\left (i \text {Subst}\left (\int \frac {x}{(i b+x) \left (a^2-x^2\right )} \, dx,x,i a \sinh (x)\right )\right ) \\ & = -\left (i \text {Subst}\left (\int \left (\frac {1}{2 (a+i b) (a-x)}-\frac {b}{\left (a^2+b^2\right ) (b-i x)}+\frac {1}{2 (a-i b) (a+x)}\right ) \, dx,x,i a \sinh (x)\right )\right ) \\ & = \frac {\log (i-\sinh (x))}{2 (i a+b)}-\frac {\log (i+\sinh (x))}{2 (i a-b)}-\frac {b \log (b+a \sinh (x))}{a^2+b^2} \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 56, normalized size of antiderivative = 0.88 \[ \int \frac {\text {sech}(x)}{a+b \text {csch}(x)} \, dx=\frac {(-i a+b) \log (i-\sinh (x))+(i a+b) \log (i+\sinh (x))-2 b \log (b+a \sinh (x))}{2 \left (a^2+b^2\right )} \]
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Time = 0.27 (sec) , antiderivative size = 72, normalized size of antiderivative = 1.12
method | result | size |
default | \(\frac {2 b \ln \left (1+\tanh \left (\frac {x}{2}\right )^{2}\right )+4 a \arctan \left (\tanh \left (\frac {x}{2}\right )\right )}{2 a^{2}+2 b^{2}}-\frac {2 b \ln \left (-\tanh \left (\frac {x}{2}\right )^{2} b +2 a \tanh \left (\frac {x}{2}\right )+b \right )}{2 a^{2}+2 b^{2}}\) | \(72\) |
risch | \(\frac {i \ln \left ({\mathrm e}^{x}+i\right ) a}{a^{2}+b^{2}}+\frac {\ln \left ({\mathrm e}^{x}+i\right ) b}{a^{2}+b^{2}}-\frac {i \ln \left ({\mathrm e}^{x}-i\right ) a}{a^{2}+b^{2}}+\frac {\ln \left ({\mathrm e}^{x}-i\right ) b}{a^{2}+b^{2}}-\frac {b \ln \left ({\mathrm e}^{2 x}+\frac {2 b \,{\mathrm e}^{x}}{a}-1\right )}{a^{2}+b^{2}}\) | \(101\) |
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Time = 0.26 (sec) , antiderivative size = 57, normalized size of antiderivative = 0.89 \[ \int \frac {\text {sech}(x)}{a+b \text {csch}(x)} \, dx=\frac {2 \, a \arctan \left (\cosh \left (x\right ) + \sinh \left (x\right )\right ) - b \log \left (\frac {2 \, {\left (a \sinh \left (x\right ) + b\right )}}{\cosh \left (x\right ) - \sinh \left (x\right )}\right ) + b \log \left (\frac {2 \, \cosh \left (x\right )}{\cosh \left (x\right ) - \sinh \left (x\right )}\right )}{a^{2} + b^{2}} \]
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\[ \int \frac {\text {sech}(x)}{a+b \text {csch}(x)} \, dx=\int \frac {\operatorname {sech}{\left (x \right )}}{a + b \operatorname {csch}{\left (x \right )}}\, dx \]
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Time = 0.26 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.03 \[ \int \frac {\text {sech}(x)}{a+b \text {csch}(x)} \, dx=-\frac {2 \, a \arctan \left (e^{\left (-x\right )}\right )}{a^{2} + b^{2}} - \frac {b \log \left (-2 \, b e^{\left (-x\right )} + a e^{\left (-2 \, x\right )} - a\right )}{a^{2} + b^{2}} + \frac {b \log \left (e^{\left (-2 \, x\right )} + 1\right )}{a^{2} + b^{2}} \]
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Time = 0.28 (sec) , antiderivative size = 89, normalized size of antiderivative = 1.39 \[ \int \frac {\text {sech}(x)}{a+b \text {csch}(x)} \, dx=-\frac {a b \log \left ({\left | -a {\left (e^{\left (-x\right )} - e^{x}\right )} + 2 \, b \right |}\right )}{a^{3} + a b^{2}} + \frac {{\left (\pi + 2 \, \arctan \left (\frac {1}{2} \, {\left (e^{\left (2 \, x\right )} - 1\right )} e^{\left (-x\right )}\right )\right )} a}{2 \, {\left (a^{2} + b^{2}\right )}} + \frac {b \log \left ({\left (e^{\left (-x\right )} - e^{x}\right )}^{2} + 4\right )}{2 \, {\left (a^{2} + b^{2}\right )}} \]
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Time = 2.99 (sec) , antiderivative size = 93, normalized size of antiderivative = 1.45 \[ \int \frac {\text {sech}(x)}{a+b \text {csch}(x)} \, dx=\frac {\ln \left (1+{\mathrm {e}}^x\,1{}\mathrm {i}\right )}{b+a\,1{}\mathrm {i}}-\frac {b\,\ln \left (a^3\,{\mathrm {e}}^{2\,x}-4\,a\,b^2-a^3+8\,b^3\,{\mathrm {e}}^x+2\,a^2\,b\,{\mathrm {e}}^x+4\,a\,b^2\,{\mathrm {e}}^{2\,x}\right )}{a^2+b^2}+\frac {\ln \left ({\mathrm {e}}^x+1{}\mathrm {i}\right )\,1{}\mathrm {i}}{a+b\,1{}\mathrm {i}} \]
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