Integrand size = 10, antiderivative size = 14 \[ \int \frac {1}{\sqrt {-1+\text {csch}^2(x)}} \, dx=\arctan \left (\frac {\coth (x)}{\sqrt {-2+\coth ^2(x)}}\right ) \]
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Time = 0.02 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.300, Rules used = {4213, 385, 209} \[ \int \frac {1}{\sqrt {-1+\text {csch}^2(x)}} \, dx=\arctan \left (\frac {\coth (x)}{\sqrt {\coth ^2(x)-2}}\right ) \]
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Rule 209
Rule 385
Rule 4213
Rubi steps \begin{align*} \text {integral}& = \text {Subst}\left (\int \frac {1}{\left (1-x^2\right ) \sqrt {-2+x^2}} \, dx,x,\coth (x)\right ) \\ & = \text {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,\frac {\coth (x)}{\sqrt {-2+\coth ^2(x)}}\right ) \\ & = \arctan \left (\frac {\coth (x)}{\sqrt {-2+\coth ^2(x)}}\right ) \\ \end{align*}
Leaf count is larger than twice the leaf count of optimal. \(48\) vs. \(2(14)=28\).
Time = 0.04 (sec) , antiderivative size = 48, normalized size of antiderivative = 3.43 \[ \int \frac {1}{\sqrt {-1+\text {csch}^2(x)}} \, dx=\frac {\sqrt {-3+\cosh (2 x)} \text {csch}(x) \log \left (\sqrt {2} \cosh (x)+\sqrt {-3+\cosh (2 x)}\right )}{\sqrt {2} \sqrt {-1+\text {csch}^2(x)}} \]
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\[\int \frac {1}{\sqrt {-1+\operatorname {csch}\left (x \right )^{2}}}d x\]
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Leaf count of result is larger than twice the leaf count of optimal. 213 vs. \(2 (12) = 24\).
Time = 0.25 (sec) , antiderivative size = 213, normalized size of antiderivative = 15.21 \[ \int \frac {1}{\sqrt {-1+\text {csch}^2(x)}} \, dx=-\frac {1}{2} \, \arctan \left (\frac {\sqrt {2} {\left (\cosh \left (x\right )^{2} + 2 \, \cosh \left (x\right ) \sinh \left (x\right ) + \sinh \left (x\right )^{2} - 1\right )} \sqrt {-\frac {\cosh \left (x\right )^{2} + \sinh \left (x\right )^{2} - 3}{\cosh \left (x\right )^{2} - 2 \, \cosh \left (x\right ) \sinh \left (x\right ) + \sinh \left (x\right )^{2}}}}{\cosh \left (x\right )^{4} + 4 \, \cosh \left (x\right ) \sinh \left (x\right )^{3} + \sinh \left (x\right )^{4} + 2 \, {\left (3 \, \cosh \left (x\right )^{2} + 2\right )} \sinh \left (x\right )^{2} + 4 \, \cosh \left (x\right )^{2} + 4 \, {\left (\cosh \left (x\right )^{3} + 2 \, \cosh \left (x\right )\right )} \sinh \left (x\right ) - 1}\right ) - \frac {1}{2} \, \arctan \left (\frac {\sqrt {2} {\left (\cosh \left (x\right )^{2} + 2 \, \cosh \left (x\right ) \sinh \left (x\right ) + \sinh \left (x\right )^{2} - 1\right )} \sqrt {-\frac {\cosh \left (x\right )^{2} + \sinh \left (x\right )^{2} - 3}{\cosh \left (x\right )^{2} - 2 \, \cosh \left (x\right ) \sinh \left (x\right ) + \sinh \left (x\right )^{2}}}}{\cosh \left (x\right )^{4} + 4 \, \cosh \left (x\right ) \sinh \left (x\right )^{3} + \sinh \left (x\right )^{4} + 6 \, {\left (\cosh \left (x\right )^{2} - 1\right )} \sinh \left (x\right )^{2} - 6 \, \cosh \left (x\right )^{2} + 4 \, {\left (\cosh \left (x\right )^{3} - 3 \, \cosh \left (x\right )\right )} \sinh \left (x\right ) + 1}\right ) \]
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\[ \int \frac {1}{\sqrt {-1+\text {csch}^2(x)}} \, dx=\int \frac {1}{\sqrt {\operatorname {csch}^{2}{\left (x \right )} - 1}}\, dx \]
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\[ \int \frac {1}{\sqrt {-1+\text {csch}^2(x)}} \, dx=\int { \frac {1}{\sqrt {\operatorname {csch}\left (x\right )^{2} - 1}} \,d x } \]
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Leaf count of result is larger than twice the leaf count of optimal. 69 vs. \(2 (12) = 24\).
Time = 0.28 (sec) , antiderivative size = 69, normalized size of antiderivative = 4.93 \[ \int \frac {1}{\sqrt {-1+\text {csch}^2(x)}} \, dx=-\frac {\arcsin \left (\frac {1}{4} \, \sqrt {2} {\left (e^{\left (2 \, x\right )} - 3\right )}\right ) + 2 \, \arctan \left (-2 \, \sqrt {2} - \frac {3 \, {\left (2 \, \sqrt {2} - \sqrt {-e^{\left (4 \, x\right )} + 6 \, e^{\left (2 \, x\right )} - 1}\right )}}{e^{\left (2 \, x\right )} - 3}\right )}{2 \, \mathrm {sgn}\left (-e^{\left (2 \, x\right )} + 1\right )} \]
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Timed out. \[ \int \frac {1}{\sqrt {-1+\text {csch}^2(x)}} \, dx=\int \frac {1}{\sqrt {\frac {1}{{\mathrm {sinh}\left (x\right )}^2}-1}} \,d x \]
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