Optimal. Leaf size=304 \[ -\frac {8 a^3 x \left (a+b x^2\right )}{65 b^{3/2} \left (\sqrt {a}+\sqrt {b} x\right ) \sqrt {a x+b x^3}}+\frac {8 a^2 x \sqrt {a x+b x^3}}{195 b}+\frac {4}{39} a x^3 \sqrt {a x+b x^3}+\frac {2}{13} x^2 \left (a x+b x^3\right )^{3/2}+\frac {8 a^{13/4} \sqrt {x} \left (\sqrt {a}+\sqrt {b} x\right ) \sqrt {\frac {a+b x^2}{\left (\sqrt {a}+\sqrt {b} x\right )^2}} E\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{b} \sqrt {x}}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{65 b^{7/4} \sqrt {a x+b x^3}}-\frac {4 a^{13/4} \sqrt {x} \left (\sqrt {a}+\sqrt {b} x\right ) \sqrt {\frac {a+b x^2}{\left (\sqrt {a}+\sqrt {b} x\right )^2}} F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{b} \sqrt {x}}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{65 b^{7/4} \sqrt {a x+b x^3}} \]
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Rubi [A]
time = 0.22, antiderivative size = 304, normalized size of antiderivative = 1.00, number of steps
used = 8, number of rules used = 7, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.467, Rules used = {2046, 2049,
2057, 335, 311, 226, 1210} \begin {gather*} -\frac {4 a^{13/4} \sqrt {x} \left (\sqrt {a}+\sqrt {b} x\right ) \sqrt {\frac {a+b x^2}{\left (\sqrt {a}+\sqrt {b} x\right )^2}} F\left (2 \text {ArcTan}\left (\frac {\sqrt [4]{b} \sqrt {x}}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{65 b^{7/4} \sqrt {a x+b x^3}}+\frac {8 a^{13/4} \sqrt {x} \left (\sqrt {a}+\sqrt {b} x\right ) \sqrt {\frac {a+b x^2}{\left (\sqrt {a}+\sqrt {b} x\right )^2}} E\left (2 \text {ArcTan}\left (\frac {\sqrt [4]{b} \sqrt {x}}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{65 b^{7/4} \sqrt {a x+b x^3}}-\frac {8 a^3 x \left (a+b x^2\right )}{65 b^{3/2} \left (\sqrt {a}+\sqrt {b} x\right ) \sqrt {a x+b x^3}}+\frac {8 a^2 x \sqrt {a x+b x^3}}{195 b}+\frac {4}{39} a x^3 \sqrt {a x+b x^3}+\frac {2}{13} x^2 \left (a x+b x^3\right )^{3/2} \end {gather*}
Antiderivative was successfully verified.
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Rule 226
Rule 311
Rule 335
Rule 1210
Rule 2046
Rule 2049
Rule 2057
Rubi steps
\begin {align*} \int x \left (a x+b x^3\right )^{3/2} \, dx &=\frac {2}{13} x^2 \left (a x+b x^3\right )^{3/2}+\frac {1}{13} (6 a) \int x^2 \sqrt {a x+b x^3} \, dx\\ &=\frac {4}{39} a x^3 \sqrt {a x+b x^3}+\frac {2}{13} x^2 \left (a x+b x^3\right )^{3/2}+\frac {1}{39} \left (4 a^2\right ) \int \frac {x^3}{\sqrt {a x+b x^3}} \, dx\\ &=\frac {8 a^2 x \sqrt {a x+b x^3}}{195 b}+\frac {4}{39} a x^3 \sqrt {a x+b x^3}+\frac {2}{13} x^2 \left (a x+b x^3\right )^{3/2}-\frac {\left (4 a^3\right ) \int \frac {x}{\sqrt {a x+b x^3}} \, dx}{65 b}\\ &=\frac {8 a^2 x \sqrt {a x+b x^3}}{195 b}+\frac {4}{39} a x^3 \sqrt {a x+b x^3}+\frac {2}{13} x^2 \left (a x+b x^3\right )^{3/2}-\frac {\left (4 a^3 \sqrt {x} \sqrt {a+b x^2}\right ) \int \frac {\sqrt {x}}{\sqrt {a+b x^2}} \, dx}{65 b \sqrt {a x+b x^3}}\\ &=\frac {8 a^2 x \sqrt {a x+b x^3}}{195 b}+\frac {4}{39} a x^3 \sqrt {a x+b x^3}+\frac {2}{13} x^2 \left (a x+b x^3\right )^{3/2}-\frac {\left (8 a^3 \sqrt {x} \sqrt {a+b x^2}\right ) \text {Subst}\left (\int \frac {x^2}{\sqrt {a+b x^4}} \, dx,x,\sqrt {x}\right )}{65 b \sqrt {a x+b x^3}}\\ &=\frac {8 a^2 x \sqrt {a x+b x^3}}{195 b}+\frac {4}{39} a x^3 \sqrt {a x+b x^3}+\frac {2}{13} x^2 \left (a x+b x^3\right )^{3/2}-\frac {\left (8 a^{7/2} \sqrt {x} \sqrt {a+b x^2}\right ) \text {Subst}\left (\int \frac {1}{\sqrt {a+b x^4}} \, dx,x,\sqrt {x}\right )}{65 b^{3/2} \sqrt {a x+b x^3}}+\frac {\left (8 a^{7/2} \sqrt {x} \sqrt {a+b x^2}\right ) \text {Subst}\left (\int \frac {1-\frac {\sqrt {b} x^2}{\sqrt {a}}}{\sqrt {a+b x^4}} \, dx,x,\sqrt {x}\right )}{65 b^{3/2} \sqrt {a x+b x^3}}\\ &=-\frac {8 a^3 x \left (a+b x^2\right )}{65 b^{3/2} \left (\sqrt {a}+\sqrt {b} x\right ) \sqrt {a x+b x^3}}+\frac {8 a^2 x \sqrt {a x+b x^3}}{195 b}+\frac {4}{39} a x^3 \sqrt {a x+b x^3}+\frac {2}{13} x^2 \left (a x+b x^3\right )^{3/2}+\frac {8 a^{13/4} \sqrt {x} \left (\sqrt {a}+\sqrt {b} x\right ) \sqrt {\frac {a+b x^2}{\left (\sqrt {a}+\sqrt {b} x\right )^2}} E\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{b} \sqrt {x}}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{65 b^{7/4} \sqrt {a x+b x^3}}-\frac {4 a^{13/4} \sqrt {x} \left (\sqrt {a}+\sqrt {b} x\right ) \sqrt {\frac {a+b x^2}{\left (\sqrt {a}+\sqrt {b} x\right )^2}} F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{b} \sqrt {x}}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{65 b^{7/4} \sqrt {a x+b x^3}}\\ \end {align*}
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Mathematica [C] Result contains higher order function than in optimal. Order 5 vs. order 4 in
optimal.
time = 10.04, size = 84, normalized size = 0.28 \begin {gather*} \frac {2 x \sqrt {x \left (a+b x^2\right )} \left (\left (a+b x^2\right )^2 \sqrt {1+\frac {b x^2}{a}}-a^2 \, _2F_1\left (-\frac {3}{2},\frac {3}{4};\frac {7}{4};-\frac {b x^2}{a}\right )\right )}{13 b \sqrt {1+\frac {b x^2}{a}}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.36, size = 217, normalized size = 0.71
method | result | size |
risch | \(\frac {2 x^{2} \left (15 b^{2} x^{4}+25 a b \,x^{2}+4 a^{2}\right ) \left (b \,x^{2}+a \right )}{195 b \sqrt {x \left (b \,x^{2}+a \right )}}-\frac {4 a^{3} \sqrt {-a b}\, \sqrt {\frac {\left (x +\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}\, \sqrt {-\frac {2 \left (x -\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}\, \sqrt {-\frac {x b}{\sqrt {-a b}}}\, \left (-\frac {2 \sqrt {-a b}\, \EllipticE \left (\sqrt {\frac {\left (x +\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}, \frac {\sqrt {2}}{2}\right )}{b}+\frac {\sqrt {-a b}\, \EllipticF \left (\sqrt {\frac {\left (x +\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}, \frac {\sqrt {2}}{2}\right )}{b}\right )}{65 b^{2} \sqrt {b \,x^{3}+a x}}\) | \(210\) |
default | \(\frac {2 b \,x^{5} \sqrt {b \,x^{3}+a x}}{13}+\frac {10 a \,x^{3} \sqrt {b \,x^{3}+a x}}{39}+\frac {8 a^{2} x \sqrt {b \,x^{3}+a x}}{195 b}-\frac {4 a^{3} \sqrt {-a b}\, \sqrt {\frac {\left (x +\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}\, \sqrt {-\frac {2 \left (x -\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}\, \sqrt {-\frac {x b}{\sqrt {-a b}}}\, \left (-\frac {2 \sqrt {-a b}\, \EllipticE \left (\sqrt {\frac {\left (x +\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}, \frac {\sqrt {2}}{2}\right )}{b}+\frac {\sqrt {-a b}\, \EllipticF \left (\sqrt {\frac {\left (x +\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}, \frac {\sqrt {2}}{2}\right )}{b}\right )}{65 b^{2} \sqrt {b \,x^{3}+a x}}\) | \(217\) |
elliptic | \(\frac {2 b \,x^{5} \sqrt {b \,x^{3}+a x}}{13}+\frac {10 a \,x^{3} \sqrt {b \,x^{3}+a x}}{39}+\frac {8 a^{2} x \sqrt {b \,x^{3}+a x}}{195 b}-\frac {4 a^{3} \sqrt {-a b}\, \sqrt {\frac {\left (x +\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}\, \sqrt {-\frac {2 \left (x -\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}\, \sqrt {-\frac {x b}{\sqrt {-a b}}}\, \left (-\frac {2 \sqrt {-a b}\, \EllipticE \left (\sqrt {\frac {\left (x +\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}, \frac {\sqrt {2}}{2}\right )}{b}+\frac {\sqrt {-a b}\, \EllipticF \left (\sqrt {\frac {\left (x +\frac {\sqrt {-a b}}{b}\right ) b}{\sqrt {-a b}}}, \frac {\sqrt {2}}{2}\right )}{b}\right )}{65 b^{2} \sqrt {b \,x^{3}+a x}}\) | \(217\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [C] Result contains higher order function than in optimal. Order 9 vs. order
4.
time = 0.36, size = 68, normalized size = 0.22 \begin {gather*} \frac {2 \, {\left (12 \, a^{3} \sqrt {b} {\rm weierstrassZeta}\left (-\frac {4 \, a}{b}, 0, {\rm weierstrassPInverse}\left (-\frac {4 \, a}{b}, 0, x\right )\right ) + {\left (15 \, b^{3} x^{5} + 25 \, a b^{2} x^{3} + 4 \, a^{2} b x\right )} \sqrt {b x^{3} + a x}\right )}}{195 \, b^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int x \left (x \left (a + b x^{2}\right )\right )^{\frac {3}{2}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.00 \begin {gather*} \int x\,{\left (b\,x^3+a\,x\right )}^{3/2} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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