Integrand size = 12, antiderivative size = 116 \[ \int \frac {e^{-\text {sech}^{-1}(a x)}}{x^3} \, dx=-\frac {a^2}{2 \left (1-\sqrt {\frac {1-a x}{1+a x}}\right )}-\frac {2 a^2}{3 \left (1+\sqrt {\frac {1-a x}{1+a x}}\right )^3}+\frac {a^2}{\left (1+\sqrt {\frac {1-a x}{1+a x}}\right )^2}-\frac {a^2}{2 \left (1+\sqrt {\frac {1-a x}{1+a x}}\right )} \]
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Time = 0.31 (sec) , antiderivative size = 116, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {6472, 1626} \[ \int \frac {e^{-\text {sech}^{-1}(a x)}}{x^3} \, dx=-\frac {a^2}{2 \left (1-\sqrt {\frac {1-a x}{a x+1}}\right )}-\frac {a^2}{2 \left (\sqrt {\frac {1-a x}{a x+1}}+1\right )}+\frac {a^2}{\left (\sqrt {\frac {1-a x}{a x+1}}+1\right )^2}-\frac {2 a^2}{3 \left (\sqrt {\frac {1-a x}{a x+1}}+1\right )^3} \]
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Rule 1626
Rule 6472
Rubi steps \begin{align*} \text {integral}& = \int \frac {1}{x^3 \left (\frac {1}{a x}+\sqrt {\frac {1-a x}{1+a x}}+\frac {\sqrt {\frac {1-a x}{1+a x}}}{a x}\right )} \, dx \\ & = -\left (\left (4 a^2\right ) \text {Subst}\left (\int \frac {x \left (1+x^2\right )}{(-1+x)^2 (1+x)^4} \, dx,x,\sqrt {\frac {1-a x}{1+a x}}\right )\right ) \\ & = -\left (\left (4 a^2\right ) \text {Subst}\left (\int \left (\frac {1}{8 (-1+x)^2}-\frac {1}{2 (1+x)^4}+\frac {1}{2 (1+x)^3}-\frac {1}{8 (1+x)^2}\right ) \, dx,x,\sqrt {\frac {1-a x}{1+a x}}\right )\right ) \\ & = -\frac {a^2}{2 \left (1-\sqrt {\frac {1-a x}{1+a x}}\right )}-\frac {2 a^2}{3 \left (1+\sqrt {\frac {1-a x}{1+a x}}\right )^3}+\frac {a^2}{\left (1+\sqrt {\frac {1-a x}{1+a x}}\right )^2}-\frac {a^2}{2 \left (1+\sqrt {\frac {1-a x}{1+a x}}\right )} \\ \end{align*}
Time = 0.06 (sec) , antiderivative size = 43, normalized size of antiderivative = 0.37 \[ \int \frac {e^{-\text {sech}^{-1}(a x)}}{x^3} \, dx=-\frac {1+(-1+a x) \sqrt {\frac {1-a x}{1+a x}} (1+a x)^2}{3 a x^3} \]
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Time = 0.91 (sec) , antiderivative size = 58, normalized size of antiderivative = 0.50
method | result | size |
default | \(a \left (-\frac {1}{3 a^{2} x^{3}}-\frac {\sqrt {\frac {a x +1}{a x}}\, \sqrt {-\frac {a x -1}{a x}}\, \left (a^{2} x^{2}-1\right )}{3 a \,x^{2}}\right )\) | \(58\) |
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none
Time = 0.26 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.45 \[ \int \frac {e^{-\text {sech}^{-1}(a x)}}{x^3} \, dx=-\frac {{\left (a^{3} x^{3} - a x\right )} \sqrt {\frac {a x + 1}{a x}} \sqrt {-\frac {a x - 1}{a x}} + 1}{3 \, a x^{3}} \]
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\[ \int \frac {e^{-\text {sech}^{-1}(a x)}}{x^3} \, dx=a \int \frac {1}{a x^{3} \sqrt {-1 + \frac {1}{a x}} \sqrt {1 + \frac {1}{a x}} + x^{2}}\, dx \]
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\[ \int \frac {e^{-\text {sech}^{-1}(a x)}}{x^3} \, dx=\int { \frac {1}{x^{3} {\left (\sqrt {\frac {1}{a x} + 1} \sqrt {\frac {1}{a x} - 1} + \frac {1}{a x}\right )}} \,d x } \]
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\[ \int \frac {e^{-\text {sech}^{-1}(a x)}}{x^3} \, dx=\int { \frac {1}{x^{3} {\left (\sqrt {\frac {1}{a x} + 1} \sqrt {\frac {1}{a x} - 1} + \frac {1}{a x}\right )}} \,d x } \]
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Time = 5.73 (sec) , antiderivative size = 58, normalized size of antiderivative = 0.50 \[ \int \frac {e^{-\text {sech}^{-1}(a x)}}{x^3} \, dx=\frac {\sqrt {\frac {1}{a\,x}-1}\,\left (\frac {x}{3}-\frac {a\,x^2}{3}+\frac {1}{3\,a}-\frac {a^2\,x^3}{3}\right )}{x^3\,\sqrt {\frac {1}{a\,x}+1}}-\frac {1}{3\,a\,x^3} \]
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