Optimal. Leaf size=96 \[ \frac{a^2 x^3 (a x+1)}{3 c^2 \left (1-a^2 x^2\right )^{3/2}}-\frac{x (4 a x+3)}{3 c^2 \sqrt{1-a^2 x^2}}-\frac{8 \sqrt{1-a^2 x^2}}{3 a c^2}+\frac{\sin ^{-1}(a x)}{a c^2} \]
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Rubi [A] time = 0.150325, antiderivative size = 96, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 5, integrand size = 20, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.25, Rules used = {6157, 6148, 819, 641, 216} \[ \frac{a^2 x^3 (a x+1)}{3 c^2 \left (1-a^2 x^2\right )^{3/2}}-\frac{x (4 a x+3)}{3 c^2 \sqrt{1-a^2 x^2}}-\frac{8 \sqrt{1-a^2 x^2}}{3 a c^2}+\frac{\sin ^{-1}(a x)}{a c^2} \]
Antiderivative was successfully verified.
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Rule 6157
Rule 6148
Rule 819
Rule 641
Rule 216
Rubi steps
\begin{align*} \int \frac{e^{\tanh ^{-1}(a x)}}{\left (c-\frac{c}{a^2 x^2}\right )^2} \, dx &=\frac{a^4 \int \frac{e^{\tanh ^{-1}(a x)} x^4}{\left (1-a^2 x^2\right )^2} \, dx}{c^2}\\ &=\frac{a^4 \int \frac{x^4 (1+a x)}{\left (1-a^2 x^2\right )^{5/2}} \, dx}{c^2}\\ &=\frac{a^2 x^3 (1+a x)}{3 c^2 \left (1-a^2 x^2\right )^{3/2}}-\frac{a^2 \int \frac{x^2 (3+4 a x)}{\left (1-a^2 x^2\right )^{3/2}} \, dx}{3 c^2}\\ &=\frac{a^2 x^3 (1+a x)}{3 c^2 \left (1-a^2 x^2\right )^{3/2}}-\frac{x (3+4 a x)}{3 c^2 \sqrt{1-a^2 x^2}}+\frac{\int \frac{3+8 a x}{\sqrt{1-a^2 x^2}} \, dx}{3 c^2}\\ &=\frac{a^2 x^3 (1+a x)}{3 c^2 \left (1-a^2 x^2\right )^{3/2}}-\frac{x (3+4 a x)}{3 c^2 \sqrt{1-a^2 x^2}}-\frac{8 \sqrt{1-a^2 x^2}}{3 a c^2}+\frac{\int \frac{1}{\sqrt{1-a^2 x^2}} \, dx}{c^2}\\ &=\frac{a^2 x^3 (1+a x)}{3 c^2 \left (1-a^2 x^2\right )^{3/2}}-\frac{x (3+4 a x)}{3 c^2 \sqrt{1-a^2 x^2}}-\frac{8 \sqrt{1-a^2 x^2}}{3 a c^2}+\frac{\sin ^{-1}(a x)}{a c^2}\\ \end{align*}
Mathematica [A] time = 0.0503823, size = 78, normalized size = 0.81 \[ \frac{3 a^3 x^3-7 a^2 x^2+3 (a x-1) \sqrt{1-a^2 x^2} \sin ^{-1}(a x)-5 a x+8}{3 a c^2 (a x-1) \sqrt{1-a^2 x^2}} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.048, size = 177, normalized size = 1.8 \begin{align*} -{\frac{1}{a{c}^{2}}\sqrt{-{a}^{2}{x}^{2}+1}}+{\frac{1}{{c}^{2}}\arctan \left ({x\sqrt{{a}^{2}}{\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}}} \right ){\frac{1}{\sqrt{{a}^{2}}}}}+{\frac{1}{6\,{a}^{3}{c}^{2}}\sqrt{-{a}^{2} \left ( x-{a}^{-1} \right ) ^{2}-2\,a \left ( x-{a}^{-1} \right ) } \left ( x-{a}^{-1} \right ) ^{-2}}+{\frac{19}{12\,{a}^{2}{c}^{2}}\sqrt{-{a}^{2} \left ( x-{a}^{-1} \right ) ^{2}-2\,a \left ( x-{a}^{-1} \right ) } \left ( x-{a}^{-1} \right ) ^{-1}}-{\frac{1}{4\,{a}^{2}{c}^{2} \left ( x+{a}^{-1} \right ) }\sqrt{-{a}^{2} \left ( x+{a}^{-1} \right ) ^{2}+2\,a \left ( x+{a}^{-1} \right ) }} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{a x + 1}{\sqrt{-a^{2} x^{2} + 1}{\left (c - \frac{c}{a^{2} x^{2}}\right )}^{2}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.118, size = 297, normalized size = 3.09 \begin{align*} -\frac{8 \, a^{3} x^{3} - 8 \, a^{2} x^{2} - 8 \, a x + 6 \,{\left (a^{3} x^{3} - a^{2} x^{2} - a x + 1\right )} \arctan \left (\frac{\sqrt{-a^{2} x^{2} + 1} - 1}{a x}\right ) +{\left (3 \, a^{3} x^{3} - 7 \, a^{2} x^{2} - 5 \, a x + 8\right )} \sqrt{-a^{2} x^{2} + 1} + 8}{3 \,{\left (a^{4} c^{2} x^{3} - a^{3} c^{2} x^{2} - a^{2} c^{2} x + a c^{2}\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \frac{a^{4} \int \frac{x^{4}}{a^{3} x^{3} \sqrt{- a^{2} x^{2} + 1} - a^{2} x^{2} \sqrt{- a^{2} x^{2} + 1} - a x \sqrt{- a^{2} x^{2} + 1} + \sqrt{- a^{2} x^{2} + 1}}\, dx}{c^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{a x + 1}{\sqrt{-a^{2} x^{2} + 1}{\left (c - \frac{c}{a^{2} x^{2}}\right )}^{2}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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