Optimal. Leaf size=172 \[ \frac{a \left (c+d x^2\right )^2 \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{4 d^2}+\frac{(5 b-4 a c) \left (c+d x^2\right ) \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{8 d^2}+\frac{b c \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{d^2}+\frac{3 b (b-4 a c) \tanh ^{-1}\left (\frac{\sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{\sqrt{a}}\right )}{8 \sqrt{a} d^2} \]
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Rubi [A] time = 0.535715, antiderivative size = 222, normalized size of antiderivative = 1.29, number of steps used = 9, number of rules used = 8, integrand size = 21, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.381, Rules used = {6722, 1975, 446, 78, 50, 63, 217, 206} \[ \frac{c \sqrt{a+\frac{b}{c+d x^2}} \left (a \left (c+d x^2\right )+b\right )^2}{b d^2}+\frac{(b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}} \left (a \left (c+d x^2\right )+b\right )}{4 b d^2}+\frac{3 (b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{8 d^2}+\frac{3 b (b-4 a c) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}} \tanh ^{-1}\left (\frac{\sqrt{a} \sqrt{c+d x^2}}{\sqrt{a \left (c+d x^2\right )+b}}\right )}{8 \sqrt{a} d^2 \sqrt{a \left (c+d x^2\right )+b}} \]
Antiderivative was successfully verified.
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Rule 6722
Rule 1975
Rule 446
Rule 78
Rule 50
Rule 63
Rule 217
Rule 206
Rubi steps
\begin{align*} \int x^3 \left (a+\frac{b}{c+d x^2}\right )^{3/2} \, dx &=\frac{\left (\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \int \frac{x^3 \left (b+a \left (c+d x^2\right )\right )^{3/2}}{\left (c+d x^2\right )^{3/2}} \, dx}{\sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{\left (\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \int \frac{x^3 \left (b+a c+a d x^2\right )^{3/2}}{\left (c+d x^2\right )^{3/2}} \, dx}{\sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{\left (\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{x (b+a c+a d x)^{3/2}}{(c+d x)^{3/2}} \, dx,x,x^2\right )}{2 \sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{c \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )^2}{b d^2}+\frac{\left ((b-4 a c) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{(b+a c+a d x)^{3/2}}{\sqrt{c+d x}} \, dx,x,x^2\right )}{2 b d \sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{(b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )}{4 b d^2}+\frac{c \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )^2}{b d^2}+\frac{\left (3 (b-4 a c) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{\sqrt{b+a c+a d x}}{\sqrt{c+d x}} \, dx,x,x^2\right )}{8 d \sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{3 (b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{8 d^2}+\frac{(b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )}{4 b d^2}+\frac{c \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )^2}{b d^2}+\frac{\left (3 b (b-4 a c) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt{c+d x} \sqrt{b+a c+a d x}} \, dx,x,x^2\right )}{16 d \sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{3 (b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{8 d^2}+\frac{(b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )}{4 b d^2}+\frac{c \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )^2}{b d^2}+\frac{\left (3 b (b-4 a c) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt{b+a x^2}} \, dx,x,\sqrt{c+d x^2}\right )}{8 d^2 \sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{3 (b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{8 d^2}+\frac{(b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )}{4 b d^2}+\frac{c \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )^2}{b d^2}+\frac{\left (3 b (b-4 a c) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{1}{1-a x^2} \, dx,x,\frac{\sqrt{c+d x^2}}{\sqrt{b+a \left (c+d x^2\right )}}\right )}{8 d^2 \sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{3 (b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{8 d^2}+\frac{(b-4 a c) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )}{4 b d^2}+\frac{c \sqrt{a+\frac{b}{c+d x^2}} \left (b+a \left (c+d x^2\right )\right )^2}{b d^2}+\frac{3 b (b-4 a c) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}} \tanh ^{-1}\left (\frac{\sqrt{a} \sqrt{c+d x^2}}{\sqrt{b+a \left (c+d x^2\right )}}\right )}{8 \sqrt{a} d^2 \sqrt{b+a \left (c+d x^2\right )}}\\ \end{align*}
Mathematica [A] time = 0.207054, size = 104, normalized size = 0.6 \[ \frac{\sqrt{a} \sqrt{\frac{a c+a d x^2+b}{c+d x^2}} \left (-2 a c^2+2 a d^2 x^4+13 b c+5 b d x^2\right )+3 b (b-4 a c) \tanh ^{-1}\left (\frac{\sqrt{a+\frac{b}{c+d x^2}}}{\sqrt{a}}\right )}{8 \sqrt{a} d^2} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.016, size = 593, normalized size = 3.5 \begin{align*}{\frac{1}{16\,{d}^{2}} \left ( 4\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}\sqrt{a{d}^{2}}{x}^{4}a{d}^{2}-12\,\ln \left ( 1/2\,{\frac{2\,a{d}^{2}{x}^{2}+2\,acd+2\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}\sqrt{a{d}^{2}}+bd}{\sqrt{a{d}^{2}}}} \right ){x}^{2}abc{d}^{2}+3\,\ln \left ( 1/2\,{\frac{2\,a{d}^{2}{x}^{2}+2\,acd+2\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}\sqrt{a{d}^{2}}+bd}{\sqrt{a{d}^{2}}}} \right ){x}^{2}{b}^{2}{d}^{2}+10\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}\sqrt{a{d}^{2}}{x}^{2}bd-12\,\ln \left ( 1/2\,{\frac{2\,a{d}^{2}{x}^{2}+2\,acd+2\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}\sqrt{a{d}^{2}}+bd}{\sqrt{a{d}^{2}}}} \right ) ab{c}^{2}d-4\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}\sqrt{a{d}^{2}}a{c}^{2}+3\,\ln \left ( 1/2\,{\frac{2\,a{d}^{2}{x}^{2}+2\,acd+2\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}\sqrt{a{d}^{2}}+bd}{\sqrt{a{d}^{2}}}} \right ){b}^{2}cd+10\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}\sqrt{a{d}^{2}}bc+16\,\sqrt{a{d}^{2}}\sqrt{ \left ( d{x}^{2}+c \right ) \left ( ad{x}^{2}+ac+b \right ) }bc \right ) \sqrt{{\frac{ad{x}^{2}+ac+b}{d{x}^{2}+c}}}{\frac{1}{\sqrt{a{d}^{2}}}}{\frac{1}{\sqrt{ \left ( d{x}^{2}+c \right ) \left ( ad{x}^{2}+ac+b \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 = 2.49546, size = 757, normalized size = 4.4 \begin{align*} \left [\frac{3 \,{\left (4 \, a b c - b^{2}\right )} \sqrt{a} \log \left (8 \, a^{2} d^{2} x^{4} + 8 \, a^{2} c^{2} + 8 \,{\left (2 \, a^{2} c + a b\right )} d x^{2} + 8 \, a b c + b^{2} - 4 \,{\left (2 \, a d^{2} x^{4} +{\left (4 \, a c + b\right )} d x^{2} + 2 \, a c^{2} + b c\right )} \sqrt{a} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}\right ) + 4 \,{\left (2 \, a^{2} d^{2} x^{4} + 5 \, a b d x^{2} - 2 \, a^{2} c^{2} + 13 \, a b c\right )} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{32 \, a d^{2}}, \frac{3 \,{\left (4 \, a b c - b^{2}\right )} \sqrt{-a} \arctan \left (\frac{{\left (2 \, a d x^{2} + 2 \, a c + b\right )} \sqrt{-a} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{2 \,{\left (a^{2} d x^{2} + a^{2} c + a b\right )}}\right ) + 2 \,{\left (2 \, a^{2} d^{2} x^{4} + 5 \, a b d x^{2} - 2 \, a^{2} c^{2} + 13 \, a b c\right )} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{16 \, a d^{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*} \int x^{3} \left (\frac{a c + a d x^{2} + b}{c + d x^{2}}\right )^{\frac{3}{2}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] time = 3.18521, size = 598, normalized size = 3.48 \begin{align*} \frac{1}{16} \,{\left (2 \, \sqrt{a d^{2} x^{4} + 2 \, a c d x^{2} + b d x^{2} + a c^{2} + b c}{\left (\frac{2 \, a x^{2}}{d} - \frac{2 \, a^{2} c d^{2} - 5 \, a b d^{2}}{a d^{4}}\right )} + \frac{{\left (4 \, a^{\frac{3}{2}} b c - \sqrt{a} b^{2}\right )} \log \left ({\left | -2 \, a^{\frac{5}{2}} c^{3} d - 6 \,{\left (\sqrt{a d^{2}} x^{2} - \sqrt{a d^{2} x^{4} + 2 \, a c d x^{2} + b d x^{2} + a c^{2} + b c}\right )} a^{2} c^{2}{\left | d \right |} - 6 \,{\left (\sqrt{a d^{2}} x^{2} - \sqrt{a d^{2} x^{4} + 2 \, a c d x^{2} + b d x^{2} + a c^{2} + b c}\right )}^{2} a^{\frac{3}{2}} c d - a^{\frac{3}{2}} b c^{2} d - 2 \,{\left (\sqrt{a d^{2}} x^{2} - \sqrt{a d^{2} x^{4} + 2 \, a c d x^{2} + b d x^{2} + a c^{2} + b c}\right )}^{3} a{\left | d \right |} - 2 \,{\left (\sqrt{a d^{2}} x^{2} - \sqrt{a d^{2} x^{4} + 2 \, a c d x^{2} + b d x^{2} + a c^{2} + b c}\right )} a b c{\left | d \right |} -{\left (\sqrt{a d^{2}} x^{2} - \sqrt{a d^{2} x^{4} + 2 \, a c d x^{2} + b d x^{2} + a c^{2} + b c}\right )}^{2} \sqrt{a} b d \right |}\right )}{a d{\left | d \right |}} + \frac{2 \,{\left (4 \, a^{\frac{3}{2}} b c{\left | d \right |} - \sqrt{a} b^{2}{\left | d \right |}\right )} \log \left (48 \, d^{2}{\left | a \right |}\right )}{a d^{3}}\right )} \mathrm{sgn}\left (d x^{2} + c\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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