Optimal. Leaf size=110 \[ \frac{a x^2 \sqrt{c-a^2 c x^2}}{2 \sqrt{1-a^2 x^2}}-\frac{3 x \sqrt{c-a^2 c x^2}}{\sqrt{1-a^2 x^2}}+\frac{4 \sqrt{c-a^2 c x^2} \log (a x+1)}{a \sqrt{1-a^2 x^2}} \]
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Rubi [A] time = 0.0833562, antiderivative size = 110, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.125, Rules used = {6143, 6140, 43} \[ \frac{a x^2 \sqrt{c-a^2 c x^2}}{2 \sqrt{1-a^2 x^2}}-\frac{3 x \sqrt{c-a^2 c x^2}}{\sqrt{1-a^2 x^2}}+\frac{4 \sqrt{c-a^2 c x^2} \log (a x+1)}{a \sqrt{1-a^2 x^2}} \]
Antiderivative was successfully verified.
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Rule 6143
Rule 6140
Rule 43
Rubi steps
\begin{align*} \int e^{-3 \tanh ^{-1}(a x)} \sqrt{c-a^2 c x^2} \, dx &=\frac{\sqrt{c-a^2 c x^2} \int e^{-3 \tanh ^{-1}(a x)} \sqrt{1-a^2 x^2} \, dx}{\sqrt{1-a^2 x^2}}\\ &=\frac{\sqrt{c-a^2 c x^2} \int \frac{(1-a x)^2}{1+a x} \, dx}{\sqrt{1-a^2 x^2}}\\ &=\frac{\sqrt{c-a^2 c x^2} \int \left (-3+a x+\frac{4}{1+a x}\right ) \, dx}{\sqrt{1-a^2 x^2}}\\ &=-\frac{3 x \sqrt{c-a^2 c x^2}}{\sqrt{1-a^2 x^2}}+\frac{a x^2 \sqrt{c-a^2 c x^2}}{2 \sqrt{1-a^2 x^2}}+\frac{4 \sqrt{c-a^2 c x^2} \log (1+a x)}{a \sqrt{1-a^2 x^2}}\\ \end{align*}
Mathematica [A] time = 0.0259275, size = 53, normalized size = 0.48 \[ \frac{\sqrt{c-a^2 c x^2} \left (\frac{a x^2}{2}+\frac{4 \log (a x+1)}{a}-3 x\right )}{\sqrt{1-a^2 x^2}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.084, size = 63, normalized size = 0.6 \begin{align*} -{\frac{{a}^{2}{x}^{2}-6\,ax+8\,\ln \left ( ax+1 \right ) }{ \left ( 2\,{a}^{2}{x}^{2}-2 \right ) a}\sqrt{-c \left ({a}^{2}{x}^{2}-1 \right ) }\sqrt{-{a}^{2}{x}^{2}+1}} \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{\sqrt{-a^{2} c x^{2} + c}{\left (-a^{2} x^{2} + 1\right )}^{\frac{3}{2}}}{{\left (a x + 1\right )}^{3}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.89631, size = 733, normalized size = 6.66 \begin{align*} \left [\frac{4 \,{\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 ) - \sqrt{-a^{2} c x^{2} + c}{\left (a^{2} x^{2} - 6 \, a x\right )} \sqrt{-a^{2} x^{2} + 1}}{2 \,{\left (a^{3} x^{2} - a\right )}}, \frac{8 \,{\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 ) - \sqrt{-a^{2} c x^{2} + c}{\left (a^{2} x^{2} - 6 \, a x\right )} \sqrt{-a^{2} x^{2} + 1}}{2 \,{\left (a^{3} x^{2} - a\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{\left (- \left (a x - 1\right ) \left (a x + 1\right )\right )^{\frac{3}{2}} \sqrt{- c \left (a x - 1\right ) \left (a x + 1\right )}}{\left (a x + 1\right )^{3}}\, 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^{2} x^{2} + 1\right )}^{\frac{3}{2}}}{{\left (a x + 1\right )}^{3}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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