Integrand size = 26, antiderivative size = 167 \[ \int x^3 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2} \, dx=\frac {a^3 x^4 \sqrt {a^2+2 a b x^3+b^2 x^6}}{4 \left (a+b x^3\right )}+\frac {3 a^2 b x^7 \sqrt {a^2+2 a b x^3+b^2 x^6}}{7 \left (a+b x^3\right )}+\frac {3 a b^2 x^{10} \sqrt {a^2+2 a b x^3+b^2 x^6}}{10 \left (a+b x^3\right )}+\frac {b^3 x^{13} \sqrt {a^2+2 a b x^3+b^2 x^6}}{13 \left (a+b x^3\right )} \]
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Time = 0.03 (sec) , antiderivative size = 167, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.077, Rules used = {1369, 276} \[ \int x^3 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2} \, dx=\frac {3 a b^2 x^{10} \sqrt {a^2+2 a b x^3+b^2 x^6}}{10 \left (a+b x^3\right )}+\frac {3 a^2 b x^7 \sqrt {a^2+2 a b x^3+b^2 x^6}}{7 \left (a+b x^3\right )}+\frac {b^3 x^{13} \sqrt {a^2+2 a b x^3+b^2 x^6}}{13 \left (a+b x^3\right )}+\frac {a^3 x^4 \sqrt {a^2+2 a b x^3+b^2 x^6}}{4 \left (a+b x^3\right )} \]
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Rule 276
Rule 1369
Rubi steps \begin{align*} \text {integral}& = \frac {\sqrt {a^2+2 a b x^3+b^2 x^6} \int x^3 \left (a b+b^2 x^3\right )^3 \, dx}{b^2 \left (a b+b^2 x^3\right )} \\ & = \frac {\sqrt {a^2+2 a b x^3+b^2 x^6} \int \left (a^3 b^3 x^3+3 a^2 b^4 x^6+3 a b^5 x^9+b^6 x^{12}\right ) \, dx}{b^2 \left (a b+b^2 x^3\right )} \\ & = \frac {a^3 x^4 \sqrt {a^2+2 a b x^3+b^2 x^6}}{4 \left (a+b x^3\right )}+\frac {3 a^2 b x^7 \sqrt {a^2+2 a b x^3+b^2 x^6}}{7 \left (a+b x^3\right )}+\frac {3 a b^2 x^{10} \sqrt {a^2+2 a b x^3+b^2 x^6}}{10 \left (a+b x^3\right )}+\frac {b^3 x^{13} \sqrt {a^2+2 a b x^3+b^2 x^6}}{13 \left (a+b x^3\right )} \\ \end{align*}
Time = 1.01 (sec) , antiderivative size = 61, normalized size of antiderivative = 0.37 \[ \int x^3 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2} \, dx=\frac {x^4 \sqrt {\left (a+b x^3\right )^2} \left (455 a^3+780 a^2 b x^3+546 a b^2 x^6+140 b^3 x^9\right )}{1820 \left (a+b x^3\right )} \]
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Time = 3.14 (sec) , antiderivative size = 58, normalized size of antiderivative = 0.35
method | result | size |
gosper | \(\frac {x^{4} \left (140 b^{3} x^{9}+546 b^{2} x^{6} a +780 a^{2} b \,x^{3}+455 a^{3}\right ) {\left (\left (b \,x^{3}+a \right )^{2}\right )}^{\frac {3}{2}}}{1820 \left (b \,x^{3}+a \right )^{3}}\) | \(58\) |
default | \(\frac {x^{4} \left (140 b^{3} x^{9}+546 b^{2} x^{6} a +780 a^{2} b \,x^{3}+455 a^{3}\right ) {\left (\left (b \,x^{3}+a \right )^{2}\right )}^{\frac {3}{2}}}{1820 \left (b \,x^{3}+a \right )^{3}}\) | \(58\) |
risch | \(\frac {a^{3} x^{4} \sqrt {\left (b \,x^{3}+a \right )^{2}}}{4 b \,x^{3}+4 a}+\frac {3 a^{2} b \,x^{7} \sqrt {\left (b \,x^{3}+a \right )^{2}}}{7 \left (b \,x^{3}+a \right )}+\frac {3 a \,b^{2} x^{10} \sqrt {\left (b \,x^{3}+a \right )^{2}}}{10 \left (b \,x^{3}+a \right )}+\frac {b^{3} x^{13} \sqrt {\left (b \,x^{3}+a \right )^{2}}}{13 b \,x^{3}+13 a}\) | \(116\) |
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Time = 0.26 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.21 \[ \int x^3 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2} \, dx=\frac {1}{13} \, b^{3} x^{13} + \frac {3}{10} \, a b^{2} x^{10} + \frac {3}{7} \, a^{2} b x^{7} + \frac {1}{4} \, a^{3} x^{4} \]
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\[ \int x^3 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2} \, dx=\int x^{3} \left (\left (a + b x^{3}\right )^{2}\right )^{\frac {3}{2}}\, dx \]
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Time = 0.21 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.21 \[ \int x^3 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2} \, dx=\frac {1}{13} \, b^{3} x^{13} + \frac {3}{10} \, a b^{2} x^{10} + \frac {3}{7} \, a^{2} b x^{7} + \frac {1}{4} \, a^{3} x^{4} \]
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Time = 0.31 (sec) , antiderivative size = 67, normalized size of antiderivative = 0.40 \[ \int x^3 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2} \, dx=\frac {1}{13} \, b^{3} x^{13} \mathrm {sgn}\left (b x^{3} + a\right ) + \frac {3}{10} \, a b^{2} x^{10} \mathrm {sgn}\left (b x^{3} + a\right ) + \frac {3}{7} \, a^{2} b x^{7} \mathrm {sgn}\left (b x^{3} + a\right ) + \frac {1}{4} \, a^{3} x^{4} \mathrm {sgn}\left (b x^{3} + a\right ) \]
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Timed out. \[ \int x^3 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2} \, dx=\int x^3\,{\left (a^2+2\,a\,b\,x^3+b^2\,x^6\right )}^{3/2} \,d x \]
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