Optimal. Leaf size=185 \[ -\frac{a x^4 \sqrt{c-a^2 c x^2}}{4 \sqrt{1-a^2 x^2}}-\frac{x^3 \sqrt{c-a^2 c x^2}}{\sqrt{1-a^2 x^2}}-\frac{2 x^2 \sqrt{c-a^2 c x^2}}{a \sqrt{1-a^2 x^2}}-\frac{4 x \sqrt{c-a^2 c x^2}}{a^2 \sqrt{1-a^2 x^2}}-\frac{4 \sqrt{c-a^2 c x^2} \log (1-a x)}{a^3 \sqrt{1-a^2 x^2}} \]
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Rubi [A] time = 0.210795, antiderivative size = 185, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 27, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.111, Rules used = {6153, 6150, 88} \[ -\frac{a x^4 \sqrt{c-a^2 c x^2}}{4 \sqrt{1-a^2 x^2}}-\frac{x^3 \sqrt{c-a^2 c x^2}}{\sqrt{1-a^2 x^2}}-\frac{2 x^2 \sqrt{c-a^2 c x^2}}{a \sqrt{1-a^2 x^2}}-\frac{4 x \sqrt{c-a^2 c x^2}}{a^2 \sqrt{1-a^2 x^2}}-\frac{4 \sqrt{c-a^2 c x^2} \log (1-a x)}{a^3 \sqrt{1-a^2 x^2}} \]
Antiderivative was successfully verified.
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Rule 6153
Rule 6150
Rule 88
Rubi steps
\begin{align*} \int e^{3 \tanh ^{-1}(a x)} x^2 \sqrt{c-a^2 c x^2} \, dx &=\frac{\sqrt{c-a^2 c x^2} \int e^{3 \tanh ^{-1}(a x)} x^2 \sqrt{1-a^2 x^2} \, dx}{\sqrt{1-a^2 x^2}}\\ &=\frac{\sqrt{c-a^2 c x^2} \int \frac{x^2 (1+a x)^2}{1-a x} \, dx}{\sqrt{1-a^2 x^2}}\\ &=\frac{\sqrt{c-a^2 c x^2} \int \left (-\frac{4}{a^2}-\frac{4 x}{a}-3 x^2-a x^3-\frac{4}{a^2 (-1+a x)}\right ) \, dx}{\sqrt{1-a^2 x^2}}\\ &=-\frac{4 x \sqrt{c-a^2 c x^2}}{a^2 \sqrt{1-a^2 x^2}}-\frac{2 x^2 \sqrt{c-a^2 c x^2}}{a \sqrt{1-a^2 x^2}}-\frac{x^3 \sqrt{c-a^2 c x^2}}{\sqrt{1-a^2 x^2}}-\frac{a x^4 \sqrt{c-a^2 c x^2}}{4 \sqrt{1-a^2 x^2}}-\frac{4 \sqrt{c-a^2 c x^2} \log (1-a x)}{a^3 \sqrt{1-a^2 x^2}}\\ \end{align*}
Mathematica [A] time = 0.0418343, size = 70, normalized size = 0.38 \[ \frac{\sqrt{c-a^2 c x^2} \left (-\frac{4 x}{a^2}-\frac{4 \log (1-a x)}{a^3}-\frac{a x^4}{4}-\frac{2 x^2}{a}-x^3\right )}{\sqrt{1-a^2 x^2}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.087, size = 79, normalized size = 0.4 \begin{align*}{\frac{{x}^{4}{a}^{4}+4\,{x}^{3}{a}^{3}+8\,{a}^{2}{x}^{2}+16\,ax+16\,\ln \left ( ax-1 \right ) }{ \left ( 4\,{a}^{2}{x}^{2}-4 \right ){a}^{3}}\sqrt{-{a}^{2}{x}^{2}+1}\sqrt{-c \left ({a}^{2}{x}^{2}-1 \right ) }} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: RuntimeError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.94976, size = 809, normalized size = 4.37 \begin{align*} \left [\frac{8 \,{\left (a^{2} x^{2} - 1\right )} \sqrt{c} \log \left (\frac{a^{6} c x^{6} - 4 \, a^{5} c x^{5} + 5 \, a^{4} c x^{4} - 4 \, a^{2} c x^{2} + 4 \, a c x +{\left (a^{4} x^{4} - 4 \, a^{3} x^{3} + 6 \, a^{2} x^{2} - 4 \, a x\right )} \sqrt{-a^{2} c x^{2} + c} \sqrt{-a^{2} x^{2} + 1} \sqrt{c} - 2 \, c}{a^{4} x^{4} - 2 \, a^{3} x^{3} + 2 \, a x - 1}\right ) +{\left (a^{4} x^{4} + 4 \, a^{3} x^{3} + 8 \, a^{2} x^{2} + 16 \, a x\right )} \sqrt{-a^{2} c x^{2} + c} \sqrt{-a^{2} x^{2} + 1}}{4 \,{\left (a^{5} x^{2} - a^{3}\right )}}, -\frac{16 \,{\left (a^{2} x^{2} - 1\right )} \sqrt{-c} \arctan \left (\frac{\sqrt{-a^{2} c x^{2} + c}{\left (a^{2} x^{2} - 2 \, a x + 2\right )} \sqrt{-a^{2} x^{2} + 1} \sqrt{-c}}{a^{4} c x^{4} - 2 \, a^{3} c x^{3} - a^{2} c x^{2} + 2 \, a c x}\right ) -{\left (a^{4} x^{4} + 4 \, a^{3} x^{3} + 8 \, a^{2} x^{2} + 16 \, a x\right )} \sqrt{-a^{2} c x^{2} + c} \sqrt{-a^{2} x^{2} + 1}}{4 \,{\left (a^{5} x^{2} - a^{3}\right )}}\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*} \int \frac{x^{2} \sqrt{- c \left (a x - 1\right ) \left (a x + 1\right )} \left (a x + 1\right )^{3}}{\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.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\sqrt{-a^{2} c x^{2} + c}{\left (a x + 1\right )}^{3} x^{2}}{{\left (-a^{2} x^{2} + 1\right )}^{\frac{3}{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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