Optimal. Leaf size=127 \[ \frac{a^2 B x \sqrt{a+c x^2}}{16 c^2}+\frac{a^3 B \tanh ^{-1}\left (\frac{\sqrt{c} x}{\sqrt{a+c x^2}}\right )}{16 c^{5/2}}-\frac{a \left (a+c x^2\right )^{3/2} (16 A+15 B x)}{120 c^2}+\frac{A x^2 \left (a+c x^2\right )^{3/2}}{5 c}+\frac{B x^3 \left (a+c x^2\right )^{3/2}}{6 c} \]
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Rubi [A] time = 0.0809779, antiderivative size = 127, 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 = {833, 780, 195, 217, 206} \[ \frac{a^2 B x \sqrt{a+c x^2}}{16 c^2}+\frac{a^3 B \tanh ^{-1}\left (\frac{\sqrt{c} x}{\sqrt{a+c x^2}}\right )}{16 c^{5/2}}-\frac{a \left (a+c x^2\right )^{3/2} (16 A+15 B x)}{120 c^2}+\frac{A x^2 \left (a+c x^2\right )^{3/2}}{5 c}+\frac{B x^3 \left (a+c x^2\right )^{3/2}}{6 c} \]
Antiderivative was successfully verified.
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Rule 833
Rule 780
Rule 195
Rule 217
Rule 206
Rubi steps
\begin{align*} \int x^3 (A+B x) \sqrt{a+c x^2} \, dx &=\frac{B x^3 \left (a+c x^2\right )^{3/2}}{6 c}+\frac{\int x^2 (-3 a B+6 A c x) \sqrt{a+c x^2} \, dx}{6 c}\\ &=\frac{A x^2 \left (a+c x^2\right )^{3/2}}{5 c}+\frac{B x^3 \left (a+c x^2\right )^{3/2}}{6 c}+\frac{\int x (-12 a A c-15 a B c x) \sqrt{a+c x^2} \, dx}{30 c^2}\\ &=\frac{A x^2 \left (a+c x^2\right )^{3/2}}{5 c}+\frac{B x^3 \left (a+c x^2\right )^{3/2}}{6 c}-\frac{a (16 A+15 B x) \left (a+c x^2\right )^{3/2}}{120 c^2}+\frac{\left (a^2 B\right ) \int \sqrt{a+c x^2} \, dx}{8 c^2}\\ &=\frac{a^2 B x \sqrt{a+c x^2}}{16 c^2}+\frac{A x^2 \left (a+c x^2\right )^{3/2}}{5 c}+\frac{B x^3 \left (a+c x^2\right )^{3/2}}{6 c}-\frac{a (16 A+15 B x) \left (a+c x^2\right )^{3/2}}{120 c^2}+\frac{\left (a^3 B\right ) \int \frac{1}{\sqrt{a+c x^2}} \, dx}{16 c^2}\\ &=\frac{a^2 B x \sqrt{a+c x^2}}{16 c^2}+\frac{A x^2 \left (a+c x^2\right )^{3/2}}{5 c}+\frac{B x^3 \left (a+c x^2\right )^{3/2}}{6 c}-\frac{a (16 A+15 B x) \left (a+c x^2\right )^{3/2}}{120 c^2}+\frac{\left (a^3 B\right ) \operatorname{Subst}\left (\int \frac{1}{1-c x^2} \, dx,x,\frac{x}{\sqrt{a+c x^2}}\right )}{16 c^2}\\ &=\frac{a^2 B x \sqrt{a+c x^2}}{16 c^2}+\frac{A x^2 \left (a+c x^2\right )^{3/2}}{5 c}+\frac{B x^3 \left (a+c x^2\right )^{3/2}}{6 c}-\frac{a (16 A+15 B x) \left (a+c x^2\right )^{3/2}}{120 c^2}+\frac{a^3 B \tanh ^{-1}\left (\frac{\sqrt{c} x}{\sqrt{a+c x^2}}\right )}{16 c^{5/2}}\\ \end{align*}
Mathematica [A] time = 0.190143, size = 107, normalized size = 0.84 \[ \frac{\sqrt{a+c x^2} \left (\sqrt{c} \left (-a^2 (32 A+15 B x)+2 a c x^2 (8 A+5 B x)+8 c^2 x^4 (6 A+5 B x)\right )+\frac{15 a^{5/2} B \sinh ^{-1}\left (\frac{\sqrt{c} x}{\sqrt{a}}\right )}{\sqrt{\frac{c x^2}{a}+1}}\right )}{240 c^{5/2}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.009, size = 115, normalized size = 0.9 \begin{align*}{\frac{B{x}^{3}}{6\,c} \left ( c{x}^{2}+a \right ) ^{{\frac{3}{2}}}}-{\frac{aBx}{8\,{c}^{2}} \left ( c{x}^{2}+a \right ) ^{{\frac{3}{2}}}}+{\frac{{a}^{2}Bx}{16\,{c}^{2}}\sqrt{c{x}^{2}+a}}+{\frac{B{a}^{3}}{16}\ln \left ( x\sqrt{c}+\sqrt{c{x}^{2}+a} \right ){c}^{-{\frac{5}{2}}}}+{\frac{A{x}^{2}}{5\,c} \left ( c{x}^{2}+a \right ) ^{{\frac{3}{2}}}}-{\frac{2\,aA}{15\,{c}^{2}} \left ( c{x}^{2}+a \right ) ^{{\frac{3}{2}}}} \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 = 1.6731, size = 501, normalized size = 3.94 \begin{align*} \left [\frac{15 \, B a^{3} \sqrt{c} \log \left (-2 \, c x^{2} - 2 \, \sqrt{c x^{2} + a} \sqrt{c} x - a\right ) + 2 \,{\left (40 \, B c^{3} x^{5} + 48 \, A c^{3} x^{4} + 10 \, B a c^{2} x^{3} + 16 \, A a c^{2} x^{2} - 15 \, B a^{2} c x - 32 \, A a^{2} c\right )} \sqrt{c x^{2} + a}}{480 \, c^{3}}, -\frac{15 \, B a^{3} \sqrt{-c} \arctan \left (\frac{\sqrt{-c} x}{\sqrt{c x^{2} + a}}\right ) -{\left (40 \, B c^{3} x^{5} + 48 \, A c^{3} x^{4} + 10 \, B a c^{2} x^{3} + 16 \, A a c^{2} x^{2} - 15 \, B a^{2} c x - 32 \, A a^{2} c\right )} \sqrt{c x^{2} + a}}{240 \, c^{3}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 7.70583, size = 192, normalized size = 1.51 \begin{align*} A \left (\begin{cases} - \frac{2 a^{2} \sqrt{a + c x^{2}}}{15 c^{2}} + \frac{a x^{2} \sqrt{a + c x^{2}}}{15 c} + \frac{x^{4} \sqrt{a + c x^{2}}}{5} & \text{for}\: c \neq 0 \\\frac{\sqrt{a} x^{4}}{4} & \text{otherwise} \end{cases}\right ) - \frac{B a^{\frac{5}{2}} x}{16 c^{2} \sqrt{1 + \frac{c x^{2}}{a}}} - \frac{B a^{\frac{3}{2}} x^{3}}{48 c \sqrt{1 + \frac{c x^{2}}{a}}} + \frac{5 B \sqrt{a} x^{5}}{24 \sqrt{1 + \frac{c x^{2}}{a}}} + \frac{B a^{3} \operatorname{asinh}{\left (\frac{\sqrt{c} x}{\sqrt{a}} \right )}}{16 c^{\frac{5}{2}}} + \frac{B c x^{7}}{6 \sqrt{a} \sqrt{1 + \frac{c x^{2}}{a}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.16024, size = 126, normalized size = 0.99 \begin{align*} -\frac{B a^{3} \log \left ({\left | -\sqrt{c} x + \sqrt{c x^{2} + a} \right |}\right )}{16 \, c^{\frac{5}{2}}} + \frac{1}{240} \, \sqrt{c x^{2} + a}{\left ({\left (2 \,{\left ({\left (4 \,{\left (5 \, B x + 6 \, A\right )} x + \frac{5 \, B a}{c}\right )} x + \frac{8 \, A a}{c}\right )} x - \frac{15 \, B a^{2}}{c^{2}}\right )} x - \frac{32 \, A a^{2}}{c^{2}}\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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