Integrand size = 13, antiderivative size = 27 \[ \int x^5 \sqrt {1+x^3} \, dx=-\frac {2}{9} \left (1+x^3\right )^{3/2}+\frac {2}{15} \left (1+x^3\right )^{5/2} \]
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Time = 0.01 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {272, 45} \[ \int x^5 \sqrt {1+x^3} \, dx=\frac {2}{15} \left (x^3+1\right )^{5/2}-\frac {2}{9} \left (x^3+1\right )^{3/2} \]
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Rule 45
Rule 272
Rubi steps \begin{align*} \text {integral}& = \frac {1}{3} \text {Subst}\left (\int x \sqrt {1+x} \, dx,x,x^3\right ) \\ & = \frac {1}{3} \text {Subst}\left (\int \left (-\sqrt {1+x}+(1+x)^{3/2}\right ) \, dx,x,x^3\right ) \\ & = -\frac {2}{9} \left (1+x^3\right )^{3/2}+\frac {2}{15} \left (1+x^3\right )^{5/2} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.74 \[ \int x^5 \sqrt {1+x^3} \, dx=\frac {2}{45} \left (1+x^3\right )^{3/2} \left (-2+3 x^3\right ) \]
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Time = 0.23 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.63
method | result | size |
pseudoelliptic | \(\frac {2 \left (x^{3}+1\right )^{\frac {3}{2}} \left (3 x^{3}-2\right )}{45}\) | \(17\) |
risch | \(\frac {2 \left (3 x^{6}+x^{3}-2\right ) \sqrt {x^{3}+1}}{45}\) | \(20\) |
trager | \(\left (\frac {2}{15} x^{6}+\frac {2}{45} x^{3}-\frac {4}{45}\right ) \sqrt {x^{3}+1}\) | \(21\) |
gosper | \(\frac {2 \left (1+x \right ) \left (x^{2}-x +1\right ) \left (3 x^{3}-2\right ) \sqrt {x^{3}+1}}{45}\) | \(28\) |
meijerg | \(-\frac {-\frac {8 \sqrt {\pi }}{15}+\frac {4 \sqrt {\pi }\, \left (x^{3}+1\right )^{\frac {3}{2}} \left (-3 x^{3}+2\right )}{15}}{6 \sqrt {\pi }}\) | \(31\) |
default | \(\frac {2 x^{6} \sqrt {x^{3}+1}}{15}+\frac {2 x^{3} \sqrt {x^{3}+1}}{45}-\frac {4 \sqrt {x^{3}+1}}{45}\) | \(35\) |
elliptic | \(\frac {2 x^{6} \sqrt {x^{3}+1}}{15}+\frac {2 x^{3} \sqrt {x^{3}+1}}{45}-\frac {4 \sqrt {x^{3}+1}}{45}\) | \(35\) |
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Time = 0.25 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.70 \[ \int x^5 \sqrt {1+x^3} \, dx=\frac {2}{45} \, {\left (3 \, x^{6} + x^{3} - 2\right )} \sqrt {x^{3} + 1} \]
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Time = 0.09 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.52 \[ \int x^5 \sqrt {1+x^3} \, dx=\frac {2 x^{6} \sqrt {x^{3} + 1}}{15} + \frac {2 x^{3} \sqrt {x^{3} + 1}}{45} - \frac {4 \sqrt {x^{3} + 1}}{45} \]
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Time = 0.18 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.70 \[ \int x^5 \sqrt {1+x^3} \, dx=\frac {2}{15} \, {\left (x^{3} + 1\right )}^{\frac {5}{2}} - \frac {2}{9} \, {\left (x^{3} + 1\right )}^{\frac {3}{2}} \]
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Time = 0.28 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.70 \[ \int x^5 \sqrt {1+x^3} \, dx=\frac {2}{15} \, {\left (x^{3} + 1\right )}^{\frac {5}{2}} - \frac {2}{9} \, {\left (x^{3} + 1\right )}^{\frac {3}{2}} \]
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Time = 0.05 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.70 \[ \int x^5 \sqrt {1+x^3} \, dx=\frac {2\,{\left (x^3+1\right )}^{5/2}}{15}-\frac {2\,{\left (x^3+1\right )}^{3/2}}{9} \]
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