Integrand size = 13, antiderivative size = 47 \[ \int \frac {e^{\coth ^{-1}(x)} x}{1-x} \, dx=\frac {2 \left (1+\frac {1}{x}\right )}{\sqrt {1-\frac {1}{x^2}}}-\sqrt {1-\frac {1}{x^2}} x-2 \text {arctanh}\left (\sqrt {1-\frac {1}{x^2}}\right ) \]
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Time = 0.09 (sec) , antiderivative size = 47, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 8, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.615, Rules used = {6310, 6312, 866, 1819, 821, 272, 65, 212} \[ \int \frac {e^{\coth ^{-1}(x)} x}{1-x} \, dx=-2 \text {arctanh}\left (\sqrt {1-\frac {1}{x^2}}\right )+\frac {2 \left (\frac {1}{x}+1\right )}{\sqrt {1-\frac {1}{x^2}}}-\sqrt {1-\frac {1}{x^2}} x \]
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Rule 65
Rule 212
Rule 272
Rule 821
Rule 866
Rule 1819
Rule 6310
Rule 6312
Rubi steps \begin{align*} \text {integral}& = -\int \frac {e^{\coth ^{-1}(x)}}{1-\frac {1}{x}} \, dx \\ & = \text {Subst}\left (\int \frac {\sqrt {1-x^2}}{(1-x)^2 x^2} \, dx,x,\frac {1}{x}\right ) \\ & = \text {Subst}\left (\int \frac {(1+x)^2}{x^2 \left (1-x^2\right )^{3/2}} \, dx,x,\frac {1}{x}\right ) \\ & = \frac {2 \left (1+\frac {1}{x}\right )}{\sqrt {1-\frac {1}{x^2}}}-\text {Subst}\left (\int \frac {-1-2 x}{x^2 \sqrt {1-x^2}} \, dx,x,\frac {1}{x}\right ) \\ & = \frac {2 \left (1+\frac {1}{x}\right )}{\sqrt {1-\frac {1}{x^2}}}-\sqrt {1-\frac {1}{x^2}} x+2 \text {Subst}\left (\int \frac {1}{x \sqrt {1-x^2}} \, dx,x,\frac {1}{x}\right ) \\ & = \frac {2 \left (1+\frac {1}{x}\right )}{\sqrt {1-\frac {1}{x^2}}}-\sqrt {1-\frac {1}{x^2}} x+\text {Subst}\left (\int \frac {1}{\sqrt {1-x} x} \, dx,x,\frac {1}{x^2}\right ) \\ & = \frac {2 \left (1+\frac {1}{x}\right )}{\sqrt {1-\frac {1}{x^2}}}-\sqrt {1-\frac {1}{x^2}} x-2 \text {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,\sqrt {1-\frac {1}{x^2}}\right ) \\ & = \frac {2 \left (1+\frac {1}{x}\right )}{\sqrt {1-\frac {1}{x^2}}}-\sqrt {1-\frac {1}{x^2}} x-2 \text {arctanh}\left (\sqrt {1-\frac {1}{x^2}}\right ) \\ \end{align*}
Time = 0.08 (sec) , antiderivative size = 41, normalized size of antiderivative = 0.87 \[ \int \frac {e^{\coth ^{-1}(x)} x}{1-x} \, dx=-\frac {\sqrt {1-\frac {1}{x^2}} (-3+x) x}{-1+x}-2 \log \left (\left (1+\sqrt {1-\frac {1}{x^2}}\right ) x\right ) \]
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Time = 0.47 (sec) , antiderivative size = 64, normalized size of antiderivative = 1.36
method | result | size |
trager | \(-\frac {\left (1+x \right ) \left (-3+x \right ) \sqrt {-\frac {1-x}{1+x}}}{x -1}-2 \ln \left (\sqrt {-\frac {1-x}{1+x}}\, x +\sqrt {-\frac {1-x}{1+x}}+x \right )\) | \(64\) |
risch | \(-\frac {x^{2}-2 x -3}{\sqrt {\frac {x -1}{1+x}}\, \left (1+x \right )}-\frac {2 \ln \left (x +\sqrt {x^{2}-1}\right ) \sqrt {\left (x -1\right ) \left (1+x \right )}}{\sqrt {\frac {x -1}{1+x}}\, \left (1+x \right )}\) | \(65\) |
default | \(\frac {\left (x^{2}-1\right )^{\frac {3}{2}}-2 x^{2} \sqrt {x^{2}-1}-2 \ln \left (x +\sqrt {x^{2}-1}\right ) x^{2}+4 x \sqrt {x^{2}-1}+4 \ln \left (x +\sqrt {x^{2}-1}\right ) x -2 \sqrt {x^{2}-1}-2 \ln \left (x +\sqrt {x^{2}-1}\right )}{\left (x -1\right ) \sqrt {\left (x -1\right ) \left (1+x \right )}\, \sqrt {\frac {x -1}{1+x}}}\) | \(106\) |
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Time = 0.25 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.40 \[ \int \frac {e^{\coth ^{-1}(x)} x}{1-x} \, dx=-\frac {2 \, {\left (x - 1\right )} \log \left (\sqrt {\frac {x - 1}{x + 1}} + 1\right ) - 2 \, {\left (x - 1\right )} \log \left (\sqrt {\frac {x - 1}{x + 1}} - 1\right ) + {\left (x^{2} - 2 \, x - 3\right )} \sqrt {\frac {x - 1}{x + 1}}}{x - 1} \]
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\[ \int \frac {e^{\coth ^{-1}(x)} x}{1-x} \, dx=- \int \frac {x}{x \sqrt {\frac {x}{x + 1} - \frac {1}{x + 1}} - \sqrt {\frac {x}{x + 1} - \frac {1}{x + 1}}}\, dx \]
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Time = 0.21 (sec) , antiderivative size = 74, normalized size of antiderivative = 1.57 \[ \int \frac {e^{\coth ^{-1}(x)} x}{1-x} \, dx=\frac {2 \, {\left (\frac {2 \, {\left (x - 1\right )}}{x + 1} - 1\right )}}{\left (\frac {x - 1}{x + 1}\right )^{\frac {3}{2}} - \sqrt {\frac {x - 1}{x + 1}}} - 2 \, \log \left (\sqrt {\frac {x - 1}{x + 1}} + 1\right ) + 2 \, \log \left (\sqrt {\frac {x - 1}{x + 1}} - 1\right ) \]
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Time = 0.27 (sec) , antiderivative size = 65, normalized size of antiderivative = 1.38 \[ \int \frac {e^{\coth ^{-1}(x)} x}{1-x} \, dx=\frac {2 \, \log \left ({\left | -x + \sqrt {x^{2} - 1} \right |}\right )}{\mathrm {sgn}\left (x + 1\right )} - \frac {\sqrt {x^{2} - 1}}{\mathrm {sgn}\left (x + 1\right )} - \frac {4}{{\left (x - \sqrt {x^{2} - 1} - 1\right )} \mathrm {sgn}\left (x + 1\right )} - 2 \, \mathrm {sgn}\left (x + 1\right ) \]
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Time = 0.05 (sec) , antiderivative size = 43, normalized size of antiderivative = 0.91 \[ \int \frac {e^{\coth ^{-1}(x)} x}{1-x} \, dx=-\frac {2\,x+8\,\mathrm {atanh}\left (\sqrt {\frac {x-1}{x+1}}\right )\,\sqrt {\frac {x-1}{x+1}}-6}{2\,\sqrt {\frac {x-1}{x+1}}} \]
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