Optimal. Leaf size=139 \[ -\frac{2 (c-a c x)^{9/2}}{9 a^4 c^4}+\frac{2 (c-a c x)^{7/2}}{7 a^4 c^3}-\frac{2 (c-a c x)^{5/2}}{5 a^4 c^2}-\frac{2 (c-a c x)^{3/2}}{3 a^4 c}-\frac{4 \sqrt{c-a c x}}{a^4}+\frac{4 \sqrt{2} \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-a c x}}{\sqrt{2} \sqrt{c}}\right )}{a^4} \]
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Rubi [A] time = 0.172503, antiderivative size = 139, normalized size of antiderivative = 1., number of steps used = 8, number of rules used = 6, integrand size = 23, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.261, Rules used = {6130, 21, 88, 50, 63, 206} \[ -\frac{2 (c-a c x)^{9/2}}{9 a^4 c^4}+\frac{2 (c-a c x)^{7/2}}{7 a^4 c^3}-\frac{2 (c-a c x)^{5/2}}{5 a^4 c^2}-\frac{2 (c-a c x)^{3/2}}{3 a^4 c}-\frac{4 \sqrt{c-a c x}}{a^4}+\frac{4 \sqrt{2} \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-a c x}}{\sqrt{2} \sqrt{c}}\right )}{a^4} \]
Antiderivative was successfully verified.
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Rule 6130
Rule 21
Rule 88
Rule 50
Rule 63
Rule 206
Rubi steps
\begin{align*} \int e^{-2 \tanh ^{-1}(a x)} x^3 \sqrt{c-a c x} \, dx &=\int \frac{x^3 (1-a x) \sqrt{c-a c x}}{1+a x} \, dx\\ &=\frac{\int \frac{x^3 (c-a c x)^{3/2}}{1+a x} \, dx}{c}\\ &=\frac{\int \left (\frac{(c-a c x)^{3/2}}{a^3}-\frac{(c-a c x)^{3/2}}{a^3 (1+a x)}-\frac{(c-a c x)^{5/2}}{a^3 c}+\frac{(c-a c x)^{7/2}}{a^3 c^2}\right ) \, dx}{c}\\ &=-\frac{2 (c-a c x)^{5/2}}{5 a^4 c^2}+\frac{2 (c-a c x)^{7/2}}{7 a^4 c^3}-\frac{2 (c-a c x)^{9/2}}{9 a^4 c^4}-\frac{\int \frac{(c-a c x)^{3/2}}{1+a x} \, dx}{a^3 c}\\ &=-\frac{2 (c-a c x)^{3/2}}{3 a^4 c}-\frac{2 (c-a c x)^{5/2}}{5 a^4 c^2}+\frac{2 (c-a c x)^{7/2}}{7 a^4 c^3}-\frac{2 (c-a c x)^{9/2}}{9 a^4 c^4}-\frac{2 \int \frac{\sqrt{c-a c x}}{1+a x} \, dx}{a^3}\\ &=-\frac{4 \sqrt{c-a c x}}{a^4}-\frac{2 (c-a c x)^{3/2}}{3 a^4 c}-\frac{2 (c-a c x)^{5/2}}{5 a^4 c^2}+\frac{2 (c-a c x)^{7/2}}{7 a^4 c^3}-\frac{2 (c-a c x)^{9/2}}{9 a^4 c^4}-\frac{(4 c) \int \frac{1}{(1+a x) \sqrt{c-a c x}} \, dx}{a^3}\\ &=-\frac{4 \sqrt{c-a c x}}{a^4}-\frac{2 (c-a c x)^{3/2}}{3 a^4 c}-\frac{2 (c-a c x)^{5/2}}{5 a^4 c^2}+\frac{2 (c-a c x)^{7/2}}{7 a^4 c^3}-\frac{2 (c-a c x)^{9/2}}{9 a^4 c^4}+\frac{8 \operatorname{Subst}\left (\int \frac{1}{2-\frac{x^2}{c}} \, dx,x,\sqrt{c-a c x}\right )}{a^4}\\ &=-\frac{4 \sqrt{c-a c x}}{a^4}-\frac{2 (c-a c x)^{3/2}}{3 a^4 c}-\frac{2 (c-a c x)^{5/2}}{5 a^4 c^2}+\frac{2 (c-a c x)^{7/2}}{7 a^4 c^3}-\frac{2 (c-a c x)^{9/2}}{9 a^4 c^4}+\frac{4 \sqrt{2} \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-a c x}}{\sqrt{2} \sqrt{c}}\right )}{a^4}\\ \end{align*}
Mathematica [A] time = 0.121177, size = 87, normalized size = 0.63 \[ \frac{4 \sqrt{2} \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-a c x}}{\sqrt{2} \sqrt{c}}\right )}{a^4}-\frac{2 \left (35 a^4 x^4-95 a^3 x^3+138 a^2 x^2-236 a x+788\right ) \sqrt{c-a c x}}{315 a^4} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.036, size = 101, normalized size = 0.7 \begin{align*} -2\,{\frac{1}{{c}^{4}{a}^{4}} \left ( 1/9\, \left ( -acx+c \right ) ^{9/2}-1/7\,c \left ( -acx+c \right ) ^{7/2}+1/5\,{c}^{2} \left ( -acx+c \right ) ^{5/2}+1/3\,{c}^{3} \left ( -acx+c \right ) ^{3/2}+2\,\sqrt{-acx+c}{c}^{4}-2\,{c}^{9/2}\sqrt{2}{\it Artanh} \left ( 1/2\,{\frac{\sqrt{-acx+c}\sqrt{2}}{\sqrt{c}}} \right ) \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: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.97642, size = 454, normalized size = 3.27 \begin{align*} \left [\frac{2 \,{\left (315 \, \sqrt{2} \sqrt{c} \log \left (\frac{a c x - 2 \, \sqrt{2} \sqrt{-a c x + c} \sqrt{c} - 3 \, c}{a x + 1}\right ) -{\left (35 \, a^{4} x^{4} - 95 \, a^{3} x^{3} + 138 \, a^{2} x^{2} - 236 \, a x + 788\right )} \sqrt{-a c x + c}\right )}}{315 \, a^{4}}, -\frac{2 \,{\left (630 \, \sqrt{2} \sqrt{-c} \arctan \left (\frac{\sqrt{2} \sqrt{-a c x + c} \sqrt{-c}}{2 \, c}\right ) +{\left (35 \, a^{4} x^{4} - 95 \, a^{3} x^{3} + 138 \, a^{2} x^{2} - 236 \, a x + 788\right )} \sqrt{-a c x + c}\right )}}{315 \, a^{4}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 13.1902, size = 126, normalized size = 0.91 \begin{align*} \frac{2 \left (- \frac{2 \sqrt{2} c^{5} \operatorname{atan}{\left (\frac{\sqrt{2} \sqrt{- a c x + c}}{2 \sqrt{- c}} \right )}}{\sqrt{- c}} - 2 c^{4} \sqrt{- a c x + c} - \frac{c^{3} \left (- a c x + c\right )^{\frac{3}{2}}}{3} - \frac{c^{2} \left (- a c x + c\right )^{\frac{5}{2}}}{5} + \frac{c \left (- a c x + c\right )^{\frac{7}{2}}}{7} - \frac{\left (- a c x + c\right )^{\frac{9}{2}}}{9}\right )}{a^{4} c^{4}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.29246, size = 215, normalized size = 1.55 \begin{align*} -\frac{4 \, \sqrt{2} c \arctan \left (\frac{\sqrt{2} \sqrt{-a c x + c}}{2 \, \sqrt{-c}}\right )}{a^{4} \sqrt{-c}} - \frac{2 \,{\left (35 \,{\left (a c x - c\right )}^{4} \sqrt{-a c x + c} a^{32} c^{32} + 45 \,{\left (a c x - c\right )}^{3} \sqrt{-a c x + c} a^{32} c^{33} + 63 \,{\left (a c x - c\right )}^{2} \sqrt{-a c x + c} a^{32} c^{34} + 105 \,{\left (-a c x + c\right )}^{\frac{3}{2}} a^{32} c^{35} + 630 \, \sqrt{-a c x + c} a^{32} c^{36}\right )}}{315 \, a^{36} c^{36}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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