Optimal. Leaf size=187 \[ \frac{\left (c+d x^2\right )^2 \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{4 a^2 d^2}-\frac{(4 a c+7 b) \left (c+d x^2\right ) \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{8 a^3 d^2}-\frac{b (a c+b)}{a^3 d^2 \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}+\frac{3 b (4 a c+5 b) \tanh ^{-1}\left (\frac{\sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{\sqrt{a}}\right )}{8 a^{7/2} d^2} \]
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Rubi [A] time = 0.573866, antiderivative size = 242, 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} \[ \frac{(4 a c+5 b) \left (c+d x^2\right ) \left (a \left (c+d x^2\right )+b\right )}{4 a^2 b d^2 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{3 (4 a c+5 b) \left (a \left (c+d x^2\right )+b\right )}{8 a^3 d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{3 b (4 a c+5 b) \sqrt{a \left (c+d x^2\right )+b} \tanh ^{-1}\left (\frac{\sqrt{a} \sqrt{c+d x^2}}{\sqrt{a \left (c+d x^2\right )+b}}\right )}{8 a^{7/2} d^2 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}-\frac{(a c+b) \left (c+d x^2\right )^2}{a b d^2 \sqrt{a+\frac{b}{c+d x^2}}} \]
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 \frac{x^3}{\left (a+\frac{b}{c+d x^2}\right )^{3/2}} \, dx &=\frac{\sqrt{b+a \left (c+d x^2\right )} \int \frac{x^3 \left (c+d x^2\right )^{3/2}}{\left (b+a \left (c+d x^2\right )\right )^{3/2}} \, dx}{\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=\frac{\sqrt{b+a \left (c+d x^2\right )} \int \frac{x^3 \left (c+d x^2\right )^{3/2}}{\left (b+a c+a d x^2\right )^{3/2}} \, dx}{\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=\frac{\sqrt{b+a \left (c+d x^2\right )} \operatorname{Subst}\left (\int \frac{x (c+d x)^{3/2}}{(b+a c+a d x)^{3/2}} \, dx,x,x^2\right )}{2 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{(b+a c) \left (c+d x^2\right )^2}{a b d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{\left ((5 b+4 a c) \sqrt{b+a \left (c+d x^2\right )}\right ) \operatorname{Subst}\left (\int \frac{(c+d x)^{3/2}}{\sqrt{b+a c+a d x}} \, dx,x,x^2\right )}{2 a b d \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{(b+a c) \left (c+d x^2\right )^2}{a b d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{(5 b+4 a c) \left (c+d x^2\right ) \left (b+a \left (c+d x^2\right )\right )}{4 a^2 b d^2 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{\left (3 (5 b+4 a c) \sqrt{b+a \left (c+d x^2\right )}\right ) \operatorname{Subst}\left (\int \frac{\sqrt{c+d x}}{\sqrt{b+a c+a d x}} \, dx,x,x^2\right )}{8 a^2 d \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{(b+a c) \left (c+d x^2\right )^2}{a b d^2 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{3 (5 b+4 a c) \left (b+a \left (c+d x^2\right )\right )}{8 a^3 d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{(5 b+4 a c) \left (c+d x^2\right ) \left (b+a \left (c+d x^2\right )\right )}{4 a^2 b d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{\left (3 b (5 b+4 a c) \sqrt{b+a \left (c+d x^2\right )}\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt{c+d x} \sqrt{b+a c+a d x}} \, dx,x,x^2\right )}{16 a^3 d \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{(b+a c) \left (c+d x^2\right )^2}{a b d^2 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{3 (5 b+4 a c) \left (b+a \left (c+d x^2\right )\right )}{8 a^3 d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{(5 b+4 a c) \left (c+d x^2\right ) \left (b+a \left (c+d x^2\right )\right )}{4 a^2 b d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{\left (3 b (5 b+4 a c) \sqrt{b+a \left (c+d x^2\right )}\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt{b+a x^2}} \, dx,x,\sqrt{c+d x^2}\right )}{8 a^3 d^2 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{(b+a c) \left (c+d x^2\right )^2}{a b d^2 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{3 (5 b+4 a c) \left (b+a \left (c+d x^2\right )\right )}{8 a^3 d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{(5 b+4 a c) \left (c+d x^2\right ) \left (b+a \left (c+d x^2\right )\right )}{4 a^2 b d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{\left (3 b (5 b+4 a c) \sqrt{b+a \left (c+d x^2\right )}\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 a^3 d^2 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{(b+a c) \left (c+d x^2\right )^2}{a b d^2 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{3 (5 b+4 a c) \left (b+a \left (c+d x^2\right )\right )}{8 a^3 d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{(5 b+4 a c) \left (c+d x^2\right ) \left (b+a \left (c+d x^2\right )\right )}{4 a^2 b d^2 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{3 b (5 b+4 a c) \sqrt{b+a \left (c+d x^2\right )} \tanh ^{-1}\left (\frac{\sqrt{a} \sqrt{c+d x^2}}{\sqrt{b+a \left (c+d x^2\right )}}\right )}{8 a^{7/2} d^2 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ \end{align*}
Mathematica [A] time = 0.275619, size = 133, normalized size = 0.71 \[ \frac{3 b (4 a c+5 b) \sqrt{\frac{a c+a d x^2+b}{c+d x^2}} \tanh ^{-1}\left (\frac{\sqrt{a+\frac{b}{c+d x^2}}}{\sqrt{a}}\right )-\sqrt{a} \left (2 a^2 \left (c^2-d^2 x^4\right )+a b \left (17 c+5 d x^2\right )+15 b^2\right )}{8 a^{7/2} d^2 \sqrt{a+\frac{b}{c+d x^2}}} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.014, size = 783, normalized size = 4.2 \begin{align*}{\frac{d{x}^{2}+c}{16\,{a}^{3}{d}^{2} \left ( ad{x}^{2}+ac+b \right ) }\sqrt{{\frac{ad{x}^{2}+ac+b}{d{x}^{2}+c}}} \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}^{2}{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}{a}^{2}bc{d}^{2}+15\,\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}a{b}^{2}{d}^{2}-10\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}{x}^{2}bad\sqrt{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 ){a}^{2}b{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}^{2}{c}^{2}+27\,\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}cad-18\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}cba\sqrt{a{d}^{2}}+15\,\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}^{3}d-16\,\sqrt{a{d}^{2}}\sqrt{ \left ( d{x}^{2}+c \right ) \left ( ad{x}^{2}+ac+b \right ) }abc-14\,\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}{b}^{2}\sqrt{a{d}^{2}}-16\,\sqrt{a{d}^{2}}\sqrt{ \left ( d{x}^{2}+c \right ) \left ( ad{x}^{2}+ac+b \right ) }{b}^{2} \right ){\frac{1}{\sqrt{ \left ( d{x}^{2}+c \right ) \left ( ad{x}^{2}+ac+b \right ) }}}{\frac{1}{\sqrt{a{d}^{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 = 2.6916, size = 1172, normalized size = 6.27 \begin{align*} \left [\frac{3 \,{\left (4 \, a^{2} b c^{2} + 9 \, a b^{2} c +{\left (4 \, a^{2} b c + 5 \, a b^{2}\right )} d x^{2} + 5 \, b^{3}\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^{3} d^{3} x^{6} +{\left (2 \, a^{3} c - 5 \, a^{2} b\right )} d^{2} x^{4} - 2 \, a^{3} c^{3} - 17 \, a^{2} b c^{2} - 15 \, a b^{2} c -{\left (2 \, a^{3} c^{2} + 22 \, a^{2} b c + 15 \, a b^{2}\right )} d x^{2}\right )} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{32 \,{\left (a^{5} d^{3} x^{2} +{\left (a^{5} c + a^{4} b\right )} d^{2}\right )}}, -\frac{3 \,{\left (4 \, a^{2} b c^{2} + 9 \, a b^{2} c +{\left (4 \, a^{2} b c + 5 \, a b^{2}\right )} d x^{2} + 5 \, b^{3}\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^{3} d^{3} x^{6} +{\left (2 \, a^{3} c - 5 \, a^{2} b\right )} d^{2} x^{4} - 2 \, a^{3} c^{3} - 17 \, a^{2} b c^{2} - 15 \, a b^{2} c -{\left (2 \, a^{3} c^{2} + 22 \, a^{2} b c + 15 \, a b^{2}\right )} d x^{2}\right )} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{16 \,{\left (a^{5} d^{3} x^{2} +{\left (a^{5} c + a^{4} b\right )} d^{2}\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^{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 = 8.96026, size = 767, normalized size = 4.1 \begin{align*} \frac{1}{8} \, \sqrt{a d^{2} x^{4} + 2 \, a c d x^{2} + b d x^{2} + a c^{2} + b c}{\left (\frac{2 \, x^{2}}{a^{2} d \mathrm{sgn}\left (d x^{2} + c\right )} - \frac{2 \, a^{6} c d^{2} + 7 \, a^{5} b d^{2}}{a^{8} d^{4} \mathrm{sgn}\left (d x^{2} + c\right )}\right )} - \frac{{\left (4 \, a^{\frac{3}{2}} b c + 5 \, \sqrt{a} b^{2}\right )} \log \left ({\left | -2 \, a^{\frac{7}{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^{3} 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{5}{2}} c d - 5 \, a^{\frac{5}{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^{2}{\left | d \right |} - 10 \,{\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} b c{\left | d \right |} - 5 \,{\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}} b d - 4 \, a^{\frac{3}{2}} b^{2} c d - 4 \,{\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^{2}{\left | d \right |} - \sqrt{a} b^{3} d \right |}\right )}{16 \, a^{4} d{\left | d \right |} \mathrm{sgn}\left (d x^{2} + c\right )} - \frac{{\left (4 \, a^{\frac{3}{2}} b c{\left | d \right |} + 5 \, \sqrt{a} b^{2}{\left | d \right |}\right )} \log \left (48 \, a^{4} d^{2}{\left | a \right |}{\left | \mathrm{sgn}\left (d x^{2} + c\right ) \right |}\right )}{8 \, a^{4} d^{3} \mathrm{sgn}\left (d x^{2} + c\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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