Optimal. Leaf size=93 \[ -\frac{1}{6} a^2 \sqrt{1-\frac{1}{a^2 x^2}} \left (28 a+\frac{3}{x}\right )-\frac{1}{3} a \sqrt{1-\frac{1}{a^2 x^2}} \left (3 a+\frac{1}{x}\right )^2-\frac{\left (a+\frac{1}{x}\right )^3}{\sqrt{1-\frac{1}{a^2 x^2}}}+\frac{11}{2} a^3 \csc ^{-1}(a x) \]
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Rubi [A] time = 0.743133, antiderivative size = 93, normalized size of antiderivative = 1., number of steps used = 10, number of rules used = 9, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.75, Rules used = {6169, 1633, 1593, 12, 852, 1635, 1654, 780, 216} \[ -\frac{1}{6} a^2 \sqrt{1-\frac{1}{a^2 x^2}} \left (28 a+\frac{3}{x}\right )-\frac{1}{3} a \sqrt{1-\frac{1}{a^2 x^2}} \left (3 a+\frac{1}{x}\right )^2-\frac{\left (a+\frac{1}{x}\right )^3}{\sqrt{1-\frac{1}{a^2 x^2}}}+\frac{11}{2} a^3 \csc ^{-1}(a x) \]
Antiderivative was successfully verified.
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Rule 6169
Rule 1633
Rule 1593
Rule 12
Rule 852
Rule 1635
Rule 1654
Rule 780
Rule 216
Rubi steps
\begin{align*} \int \frac{e^{3 \coth ^{-1}(a x)}}{x^4} \, dx &=-\operatorname{Subst}\left (\int \frac{x^2 \left (1+\frac{x}{a}\right )^2}{\left (1-\frac{x}{a}\right ) \sqrt{1-\frac{x^2}{a^2}}} \, dx,x,\frac{1}{x}\right )\\ &=\frac{\operatorname{Subst}\left (\int \frac{\sqrt{1-\frac{x^2}{a^2}} \left (-a x^2-x^3\right )}{\left (1-\frac{x}{a}\right )^2} \, dx,x,\frac{1}{x}\right )}{a}\\ &=\frac{\operatorname{Subst}\left (\int \frac{(-a-x) x^2 \sqrt{1-\frac{x^2}{a^2}}}{\left (1-\frac{x}{a}\right )^2} \, dx,x,\frac{1}{x}\right )}{a}\\ &=-\frac{\operatorname{Subst}\left (\int \frac{a^2 x^2 \left (1-\frac{x^2}{a^2}\right )^{3/2}}{\left (1-\frac{x}{a}\right )^3} \, dx,x,\frac{1}{x}\right )}{a^2}\\ &=-\operatorname{Subst}\left (\int \frac{x^2 \left (1-\frac{x^2}{a^2}\right )^{3/2}}{\left (1-\frac{x}{a}\right )^3} \, dx,x,\frac{1}{x}\right )\\ &=-\operatorname{Subst}\left (\int \frac{x^2 \left (1+\frac{x}{a}\right )^3}{\left (1-\frac{x^2}{a^2}\right )^{3/2}} \, dx,x,\frac{1}{x}\right )\\ &=-\frac{\left (a+\frac{1}{x}\right )^3}{\sqrt{1-\frac{1}{a^2 x^2}}}+\operatorname{Subst}\left (\int \frac{\left (1+\frac{x}{a}\right )^2 \left (3 a^2+a x\right )}{\sqrt{1-\frac{x^2}{a^2}}} \, dx,x,\frac{1}{x}\right )\\ &=-\frac{\left (a+\frac{1}{x}\right )^3}{\sqrt{1-\frac{1}{a^2 x^2}}}-\frac{1}{3} a \sqrt{1-\frac{1}{a^2 x^2}} \left (3 a+\frac{1}{x}\right )^2-\frac{1}{3} \operatorname{Subst}\left (\int \frac{\left (-5-\frac{3 x}{a}\right ) \left (3 a^2+a x\right )}{\sqrt{1-\frac{x^2}{a^2}}} \, dx,x,\frac{1}{x}\right )\\ &=-\frac{\left (a+\frac{1}{x}\right )^3}{\sqrt{1-\frac{1}{a^2 x^2}}}-\frac{1}{3} a \sqrt{1-\frac{1}{a^2 x^2}} \left (3 a+\frac{1}{x}\right )^2-\frac{1}{6} a^2 \sqrt{1-\frac{1}{a^2 x^2}} \left (28 a+\frac{3}{x}\right )+\frac{1}{2} \left (11 a^2\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt{1-\frac{x^2}{a^2}}} \, dx,x,\frac{1}{x}\right )\\ &=-\frac{\left (a+\frac{1}{x}\right )^3}{\sqrt{1-\frac{1}{a^2 x^2}}}-\frac{1}{3} a \sqrt{1-\frac{1}{a^2 x^2}} \left (3 a+\frac{1}{x}\right )^2-\frac{1}{6} a^2 \sqrt{1-\frac{1}{a^2 x^2}} \left (28 a+\frac{3}{x}\right )+\frac{11}{2} a^3 \csc ^{-1}(a x)\\ \end{align*}
Mathematica [A] time = 0.111733, size = 66, normalized size = 0.71 \[ \frac{1}{6} a \left (\frac{\sqrt{1-\frac{1}{a^2 x^2}} \left (-52 a^3 x^3+19 a^2 x^2+7 a x+2\right )}{x^2 (a x-1)}+33 a^2 \sin ^{-1}\left (\frac{1}{a x}\right )\right ) \]
Warning: Unable to verify antiderivative.
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Maple [B] time = 0.171, size = 666, normalized size = 7.2 \begin{align*} \text{result too large to display} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.49323, size = 208, normalized size = 2.24 \begin{align*} -\frac{1}{3} \,{\left (33 \, a^{2} \arctan \left (\sqrt{\frac{a x - 1}{a x + 1}}\right ) + \frac{\frac{75 \,{\left (a x - 1\right )} a^{2}}{a x + 1} + \frac{88 \,{\left (a x - 1\right )}^{2} a^{2}}{{\left (a x + 1\right )}^{2}} + \frac{33 \,{\left (a x - 1\right )}^{3} a^{2}}{{\left (a x + 1\right )}^{3}} + 12 \, a^{2}}{\left (\frac{a x - 1}{a x + 1}\right )^{\frac{7}{2}} + 3 \, \left (\frac{a x - 1}{a x + 1}\right )^{\frac{5}{2}} + 3 \, \left (\frac{a x - 1}{a x + 1}\right )^{\frac{3}{2}} + \sqrt{\frac{a x - 1}{a x + 1}}}\right )} a \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.94999, size = 213, normalized size = 2.29 \begin{align*} -\frac{66 \,{\left (a^{4} x^{4} - a^{3} x^{3}\right )} \arctan \left (\sqrt{\frac{a x - 1}{a x + 1}}\right ) +{\left (52 \, a^{4} x^{4} + 33 \, a^{3} x^{3} - 26 \, a^{2} x^{2} - 9 \, a x - 2\right )} \sqrt{\frac{a x - 1}{a x + 1}}}{6 \,{\left (a x^{4} - x^{3}\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.21361, size = 203, normalized size = 2.18 \begin{align*} -\frac{1}{3} \,{\left (33 \, a^{2} \arctan \left (\sqrt{\frac{a x - 1}{a x + 1}}\right ) + \frac{12 \, a^{2}}{\sqrt{\frac{a x - 1}{a x + 1}}} + \frac{\frac{52 \,{\left (a x - 1\right )} a^{2} \sqrt{\frac{a x - 1}{a x + 1}}}{a x + 1} + \frac{21 \,{\left (a x - 1\right )}^{2} a^{2} \sqrt{\frac{a x - 1}{a x + 1}}}{{\left (a x + 1\right )}^{2}} + 39 \, a^{2} \sqrt{\frac{a x - 1}{a x + 1}}}{{\left (\frac{a x - 1}{a x + 1} + 1\right )}^{3}}\right )} a \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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