Integrand size = 22, antiderivative size = 45 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{\left (c-\frac {c}{a x}\right )^3} \, dx=-\frac {2}{a^2 c^3 \sqrt {1-\frac {1}{a^2 x^2}} x}+\frac {x}{c^3 \sqrt {1-\frac {1}{a^2 x^2}}} \]
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Time = 0.04 (sec) , antiderivative size = 45, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.136, Rules used = {6312, 277, 197} \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{\left (c-\frac {c}{a x}\right )^3} \, dx=\frac {x}{c^3 \sqrt {1-\frac {1}{a^2 x^2}}}-\frac {2}{a^2 c^3 x \sqrt {1-\frac {1}{a^2 x^2}}} \]
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Rule 197
Rule 277
Rule 6312
Rubi steps \begin{align*} \text {integral}& = -\frac {\text {Subst}\left (\int \frac {1}{x^2 \left (1-\frac {x^2}{a^2}\right )^{3/2}} \, dx,x,\frac {1}{x}\right )}{c^3} \\ & = \frac {x}{c^3 \sqrt {1-\frac {1}{a^2 x^2}}}-\frac {2 \text {Subst}\left (\int \frac {1}{\left (1-\frac {x^2}{a^2}\right )^{3/2}} \, dx,x,\frac {1}{x}\right )}{a^2 c^3} \\ & = -\frac {2}{a^2 c^3 \sqrt {1-\frac {1}{a^2 x^2}} x}+\frac {x}{c^3 \sqrt {1-\frac {1}{a^2 x^2}}} \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 33, normalized size of antiderivative = 0.73 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{\left (c-\frac {c}{a x}\right )^3} \, dx=\frac {-2+a^2 x^2}{a^2 c^3 \sqrt {1-\frac {1}{a^2 x^2}} x} \]
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Time = 0.20 (sec) , antiderivative size = 41, normalized size of antiderivative = 0.91
method | result | size |
trager | \(\frac {\left (a^{2} x^{2}-2\right ) \sqrt {-\frac {-a x +1}{a x +1}}}{a \,c^{3} \left (a x -1\right )}\) | \(41\) |
gosper | \(\frac {\left (\frac {a x -1}{a x +1}\right )^{\frac {3}{2}} \left (a^{2} x^{2}-2\right ) \left (a x +1\right )}{a \left (a x -1\right )^{2} c^{3}}\) | \(44\) |
default | \(\frac {\left (\frac {a x -1}{a x +1}\right )^{\frac {3}{2}} \left (a^{3} x^{3}+a^{2} x^{2}-2 a x -2\right )}{a \left (a x -1\right )^{2} c^{3}}\) | \(50\) |
risch | \(\frac {\left (a x +1\right ) \sqrt {\frac {a x -1}{a x +1}}}{a \,c^{3}}-\frac {\sqrt {\frac {a x -1}{a x +1}}}{a \,c^{3} \left (a x -1\right )}\) | \(59\) |
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Time = 0.25 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.93 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{\left (c-\frac {c}{a x}\right )^3} \, dx=\frac {{\left (a^{2} x^{2} - 2\right )} \sqrt {\frac {a x - 1}{a x + 1}}}{a^{2} c^{3} x - a c^{3}} \]
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\[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{\left (c-\frac {c}{a x}\right )^3} \, dx=\frac {a^{3} \left (\int \left (- \frac {x^{3} \sqrt {\frac {a x}{a x + 1} - \frac {1}{a x + 1}}}{a^{4} x^{4} - 2 a^{3} x^{3} + 2 a x - 1}\right )\, dx + \int \frac {a x^{4} \sqrt {\frac {a x}{a x + 1} - \frac {1}{a x + 1}}}{a^{4} x^{4} - 2 a^{3} x^{3} + 2 a x - 1}\, dx\right )}{c^{3}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 92 vs. \(2 (41) = 82\).
Time = 0.20 (sec) , antiderivative size = 92, normalized size of antiderivative = 2.04 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{\left (c-\frac {c}{a x}\right )^3} \, dx=-\frac {1}{2} \, a {\left (\frac {\frac {5 \, {\left (a x - 1\right )}}{a x + 1} - 1}{a^{2} c^{3} \left (\frac {a x - 1}{a x + 1}\right )^{\frac {3}{2}} - a^{2} c^{3} \sqrt {\frac {a x - 1}{a x + 1}}} - \frac {\sqrt {\frac {a x - 1}{a x + 1}}}{a^{2} c^{3}}\right )} \]
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Time = 0.27 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.93 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{\left (c-\frac {c}{a x}\right )^3} \, dx=\frac {{\left (\frac {\sqrt {a^{2} x^{2} - 1}}{c^{3}} - \frac {1}{\sqrt {a^{2} x^{2} - 1} c^{3}}\right )} \mathrm {sgn}\left (a x + 1\right )}{a} \]
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Time = 0.08 (sec) , antiderivative size = 41, normalized size of antiderivative = 0.91 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{\left (c-\frac {c}{a x}\right )^3} \, dx=\frac {a^2\,x^2-2}{\left (x\,a^2\,c^3+a\,c^3\right )\,\sqrt {\frac {a\,x-1}{a\,x+1}}} \]
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