Integrand size = 10, antiderivative size = 54 \[ \int \frac {\text {arcsinh}\left (\frac {a}{x}\right )}{x^4} \, dx=-\frac {\sqrt {1+\frac {a^2}{x^2}}}{3 a^3}+\frac {\left (1+\frac {a^2}{x^2}\right )^{3/2}}{9 a^3}-\frac {\text {csch}^{-1}\left (\frac {x}{a}\right )}{3 x^3} \]
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Time = 0.03 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.400, Rules used = {5870, 6419, 272, 45} \[ \int \frac {\text {arcsinh}\left (\frac {a}{x}\right )}{x^4} \, dx=\frac {\left (\frac {a^2}{x^2}+1\right )^{3/2}}{9 a^3}-\frac {\sqrt {\frac {a^2}{x^2}+1}}{3 a^3}-\frac {\text {csch}^{-1}\left (\frac {x}{a}\right )}{3 x^3} \]
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Rule 45
Rule 272
Rule 5870
Rule 6419
Rubi steps \begin{align*} \text {integral}& = \int \frac {\text {csch}^{-1}\left (\frac {x}{a}\right )}{x^4} \, dx \\ & = -\frac {\text {csch}^{-1}\left (\frac {x}{a}\right )}{3 x^3}-\frac {1}{3} a \int \frac {1}{\sqrt {1+\frac {a^2}{x^2}} x^5} \, dx \\ & = -\frac {\text {csch}^{-1}\left (\frac {x}{a}\right )}{3 x^3}+\frac {1}{6} a \text {Subst}\left (\int \frac {x}{\sqrt {1+a^2 x}} \, dx,x,\frac {1}{x^2}\right ) \\ & = -\frac {\text {csch}^{-1}\left (\frac {x}{a}\right )}{3 x^3}+\frac {1}{6} a \text {Subst}\left (\int \left (-\frac {1}{a^2 \sqrt {1+a^2 x}}+\frac {\sqrt {1+a^2 x}}{a^2}\right ) \, dx,x,\frac {1}{x^2}\right ) \\ & = -\frac {\sqrt {1+\frac {a^2}{x^2}}}{3 a^3}+\frac {\left (1+\frac {a^2}{x^2}\right )^{3/2}}{9 a^3}-\frac {\text {csch}^{-1}\left (\frac {x}{a}\right )}{3 x^3} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 48, normalized size of antiderivative = 0.89 \[ \int \frac {\text {arcsinh}\left (\frac {a}{x}\right )}{x^4} \, dx=\left (-\frac {2}{9 a^3}+\frac {1}{9 a x^2}\right ) \sqrt {\frac {a^2+x^2}{x^2}}-\frac {\text {arcsinh}\left (\frac {a}{x}\right )}{3 x^3} \]
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Time = 0.01 (sec) , antiderivative size = 50, normalized size of antiderivative = 0.93
method | result | size |
parts | \(-\frac {\operatorname {arcsinh}\left (\frac {a}{x}\right )}{3 x^{3}}+\frac {\left (a^{2}+x^{2}\right ) \left (a^{2}-2 x^{2}\right )}{9 a^{3} \sqrt {\frac {a^{2}+x^{2}}{x^{2}}}\, x^{4}}\) | \(50\) |
derivativedivides | \(-\frac {\frac {a^{3} \operatorname {arcsinh}\left (\frac {a}{x}\right )}{3 x^{3}}-\frac {a^{2} \sqrt {\frac {a^{2}}{x^{2}}+1}}{9 x^{2}}+\frac {2 \sqrt {\frac {a^{2}}{x^{2}}+1}}{9}}{a^{3}}\) | \(53\) |
default | \(-\frac {\frac {a^{3} \operatorname {arcsinh}\left (\frac {a}{x}\right )}{3 x^{3}}-\frac {a^{2} \sqrt {\frac {a^{2}}{x^{2}}+1}}{9 x^{2}}+\frac {2 \sqrt {\frac {a^{2}}{x^{2}}+1}}{9}}{a^{3}}\) | \(53\) |
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Time = 0.25 (sec) , antiderivative size = 62, normalized size of antiderivative = 1.15 \[ \int \frac {\text {arcsinh}\left (\frac {a}{x}\right )}{x^4} \, dx=-\frac {3 \, a^{3} \log \left (\frac {x \sqrt {\frac {a^{2} + x^{2}}{x^{2}}} + a}{x}\right ) - {\left (a^{2} x - 2 \, x^{3}\right )} \sqrt {\frac {a^{2} + x^{2}}{x^{2}}}}{9 \, a^{3} x^{3}} \]
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\[ \int \frac {\text {arcsinh}\left (\frac {a}{x}\right )}{x^4} \, dx=\int \frac {\operatorname {asinh}{\left (\frac {a}{x} \right )}}{x^{4}}\, dx \]
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Time = 0.25 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.87 \[ \int \frac {\text {arcsinh}\left (\frac {a}{x}\right )}{x^4} \, dx=\frac {1}{9} \, a {\left (\frac {{\left (\frac {a^{2}}{x^{2}} + 1\right )}^{\frac {3}{2}}}{a^{4}} - \frac {3 \, \sqrt {\frac {a^{2}}{x^{2}} + 1}}{a^{4}}\right )} - \frac {\operatorname {arsinh}\left (\frac {a}{x}\right )}{3 \, x^{3}} \]
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Time = 0.32 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.39 \[ \int \frac {\text {arcsinh}\left (\frac {a}{x}\right )}{x^4} \, dx=-\frac {\log \left (\sqrt {\frac {a^{2}}{x^{2}} + 1} + \frac {a}{x}\right )}{3 \, x^{3}} - \frac {4 \, {\left (a^{2} - 3 \, {\left (x - \sqrt {a^{2} + x^{2}}\right )}^{2}\right )} a}{9 \, {\left (a^{2} - {\left (x - \sqrt {a^{2} + x^{2}}\right )}^{2}\right )}^{3} \mathrm {sgn}\left (x\right )} \]
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Timed out. \[ \int \frac {\text {arcsinh}\left (\frac {a}{x}\right )}{x^4} \, dx=\int \frac {\mathrm {asinh}\left (\frac {a}{x}\right )}{x^4} \,d x \]
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