Optimal. Leaf size=117 \[ \frac{4 a^3 \sqrt{1-a^2 x^2}}{1-a x}-\frac{14 a^2 \sqrt{1-a^2 x^2}}{3 x}-\frac{3 a \sqrt{1-a^2 x^2}}{2 x^2}-\frac{\sqrt{1-a^2 x^2}}{3 x^3}-\frac{11}{2} a^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right ) \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.737876, antiderivative size = 117, normalized size of antiderivative = 1., number of steps used = 14, number of rules used = 9, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.75, Rules used = {6124, 6742, 271, 264, 266, 51, 63, 208, 651} \[ \frac{4 a^3 \sqrt{1-a^2 x^2}}{1-a x}-\frac{14 a^2 \sqrt{1-a^2 x^2}}{3 x}-\frac{3 a \sqrt{1-a^2 x^2}}{2 x^2}-\frac{\sqrt{1-a^2 x^2}}{3 x^3}-\frac{11}{2} a^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right ) \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 6124
Rule 6742
Rule 271
Rule 264
Rule 266
Rule 51
Rule 63
Rule 208
Rule 651
Rubi steps
\begin{align*} \int \frac{e^{3 \tanh ^{-1}(a x)}}{x^4} \, dx &=\int \frac{(1+a x)^2}{x^4 (1-a x) \sqrt{1-a^2 x^2}} \, dx\\ &=\int \left (\frac{1}{x^4 \sqrt{1-a^2 x^2}}+\frac{3 a}{x^3 \sqrt{1-a^2 x^2}}+\frac{4 a^2}{x^2 \sqrt{1-a^2 x^2}}+\frac{4 a^3}{x \sqrt{1-a^2 x^2}}-\frac{4 a^4}{(-1+a x) \sqrt{1-a^2 x^2}}\right ) \, dx\\ &=(3 a) \int \frac{1}{x^3 \sqrt{1-a^2 x^2}} \, dx+\left (4 a^2\right ) \int \frac{1}{x^2 \sqrt{1-a^2 x^2}} \, dx+\left (4 a^3\right ) \int \frac{1}{x \sqrt{1-a^2 x^2}} \, dx-\left (4 a^4\right ) \int \frac{1}{(-1+a x) \sqrt{1-a^2 x^2}} \, dx+\int \frac{1}{x^4 \sqrt{1-a^2 x^2}} \, dx\\ &=-\frac{\sqrt{1-a^2 x^2}}{3 x^3}-\frac{4 a^2 \sqrt{1-a^2 x^2}}{x}+\frac{4 a^3 \sqrt{1-a^2 x^2}}{1-a x}+\frac{1}{2} (3 a) \operatorname{Subst}\left (\int \frac{1}{x^2 \sqrt{1-a^2 x}} \, dx,x,x^2\right )+\frac{1}{3} \left (2 a^2\right ) \int \frac{1}{x^2 \sqrt{1-a^2 x^2}} \, dx+\left (2 a^3\right ) \operatorname{Subst}\left (\int \frac{1}{x \sqrt{1-a^2 x}} \, dx,x,x^2\right )\\ &=-\frac{\sqrt{1-a^2 x^2}}{3 x^3}-\frac{3 a \sqrt{1-a^2 x^2}}{2 x^2}-\frac{14 a^2 \sqrt{1-a^2 x^2}}{3 x}+\frac{4 a^3 \sqrt{1-a^2 x^2}}{1-a x}-(4 a) \operatorname{Subst}\left (\int \frac{1}{\frac{1}{a^2}-\frac{x^2}{a^2}} \, dx,x,\sqrt{1-a^2 x^2}\right )+\frac{1}{4} \left (3 a^3\right ) \operatorname{Subst}\left (\int \frac{1}{x \sqrt{1-a^2 x}} \, dx,x,x^2\right )\\ &=-\frac{\sqrt{1-a^2 x^2}}{3 x^3}-\frac{3 a \sqrt{1-a^2 x^2}}{2 x^2}-\frac{14 a^2 \sqrt{1-a^2 x^2}}{3 x}+\frac{4 a^3 \sqrt{1-a^2 x^2}}{1-a x}-4 a^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )-\frac{1}{2} (3 a) \operatorname{Subst}\left (\int \frac{1}{\frac{1}{a^2}-\frac{x^2}{a^2}} \, dx,x,\sqrt{1-a^2 x^2}\right )\\ &=-\frac{\sqrt{1-a^2 x^2}}{3 x^3}-\frac{3 a \sqrt{1-a^2 x^2}}{2 x^2}-\frac{14 a^2 \sqrt{1-a^2 x^2}}{3 x}+\frac{4 a^3 \sqrt{1-a^2 x^2}}{1-a x}-\frac{11}{2} a^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )\\ \end{align*}
Mathematica [A] time = 0.0803808, size = 81, normalized size = 0.69 \[ \frac{1}{6} \left (\frac{\sqrt{1-a^2 x^2} \left (-52 a^3 x^3+19 a^2 x^2+7 a x+2\right )}{x^3 (a x-1)}-33 a^3 \log \left (\sqrt{1-a^2 x^2}+1\right )+33 a^3 \log (x)\right ) \]
Warning: Unable to verify antiderivative.
[In]
[Out]
________________________________________________________________________________________
Maple [A] time = 0.045, size = 146, normalized size = 1.3 \begin{align*}{\frac{13\,{a}^{2}}{3} \left ( -{\frac{1}{x}{\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}}}+2\,{\frac{{a}^{2}x}{\sqrt{-{a}^{2}{x}^{2}+1}}} \right ) }+{a}^{3} \left ({\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}}-{\it Artanh} \left ({\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}} \right ) \right ) +3\,a \left ( -1/2\,{\frac{1}{{x}^{2}\sqrt{-{a}^{2}{x}^{2}+1}}}+3/2\,{a}^{2} \left ({\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}}-{\it Artanh} \left ({\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}} \right ) \right ) \right ) -{\frac{1}{3\,{x}^{3}}{\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [A] time = 0.955518, size = 165, normalized size = 1.41 \begin{align*} \frac{26 \, a^{4} x}{3 \, \sqrt{-a^{2} x^{2} + 1}} - \frac{11}{2} \, a^{3} \log \left (\frac{2 \, \sqrt{-a^{2} x^{2} + 1}}{{\left | x \right |}} + \frac{2}{{\left | x \right |}}\right ) + \frac{11 \, a^{3}}{2 \, \sqrt{-a^{2} x^{2} + 1}} - \frac{13 \, a^{2}}{3 \, \sqrt{-a^{2} x^{2} + 1} x} - \frac{3 \, a}{2 \, \sqrt{-a^{2} x^{2} + 1} x^{2}} - \frac{1}{3 \, \sqrt{-a^{2} x^{2} + 1} x^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A] time = 1.88863, size = 217, normalized size = 1.85 \begin{align*} \frac{24 \, a^{4} x^{4} - 24 \, a^{3} x^{3} + 33 \,{\left (a^{4} x^{4} - a^{3} x^{3}\right )} \log \left (\frac{\sqrt{-a^{2} x^{2} + 1} - 1}{x}\right ) -{\left (52 \, a^{3} x^{3} - 19 \, a^{2} x^{2} - 7 \, a x - 2\right )} \sqrt{-a^{2} x^{2} + 1}}{6 \,{\left (a x^{4} - x^{3}\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\left (a x + 1\right )^{3}}{x^{4} \left (- \left (a x - 1\right ) \left (a x + 1\right )\right )^{\frac{3}{2}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [B] time = 1.23796, size = 358, normalized size = 3.06 \begin{align*} -\frac{{\left (a^{4} + \frac{8 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )} a^{2}}{x} + \frac{48 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{2}}{x^{2}} - \frac{249 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{3}}{a^{2} x^{3}}\right )} a^{6} x^{3}}{24 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{3}{\left (\frac{\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a}{a^{2} x} - 1\right )}{\left | a \right |}} - \frac{11 \, a^{4} \log \left (\frac{{\left | -2 \, \sqrt{-a^{2} x^{2} + 1}{\left | a \right |} - 2 \, a \right |}}{2 \, a^{2}{\left | x \right |}}\right )}{2 \,{\left | a \right |}} - \frac{\frac{57 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )} a^{4}}{x} + \frac{9 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{2} a^{2}}{x^{2}} + \frac{{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{3}}{x^{3}}}{24 \, a^{2}{\left | a \right |}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]