Integrand size = 15, antiderivative size = 31 \[ \int \frac {x^5}{\sqrt {-1-x^3}} \, dx=\frac {2}{3} \sqrt {-1-x^3}+\frac {2}{9} \left (-1-x^3\right )^{3/2} \]
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Time = 0.01 (sec) , antiderivative size = 31, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {272, 45} \[ \int \frac {x^5}{\sqrt {-1-x^3}} \, dx=\frac {2}{9} \left (-x^3-1\right )^{3/2}+\frac {2}{3} \sqrt {-x^3-1} \]
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Rule 45
Rule 272
Rubi steps \begin{align*} \text {integral}& = \frac {1}{3} \text {Subst}\left (\int \frac {x}{\sqrt {-1-x}} \, dx,x,x^3\right ) \\ & = \frac {1}{3} \text {Subst}\left (\int \left (-\frac {1}{\sqrt {-1-x}}-\sqrt {-1-x}\right ) \, dx,x,x^3\right ) \\ & = \frac {2}{3} \sqrt {-1-x^3}+\frac {2}{9} \left (-1-x^3\right )^{3/2} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.65 \[ \int \frac {x^5}{\sqrt {-1-x^3}} \, dx=-\frac {2}{9} \sqrt {-1-x^3} \left (-2+x^3\right ) \]
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Time = 3.81 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.55
method | result | size |
pseudoelliptic | \(-\frac {2 \left (x^{3}-2\right ) \sqrt {-x^{3}-1}}{9}\) | \(17\) |
trager | \(\left (-\frac {2 x^{3}}{9}+\frac {4}{9}\right ) \sqrt {-x^{3}-1}\) | \(18\) |
risch | \(\frac {2 \left (x^{3}-2\right ) \left (x^{3}+1\right )}{9 \sqrt {-x^{3}-1}}\) | \(22\) |
default | \(-\frac {2 x^{3} \sqrt {-x^{3}-1}}{9}+\frac {4 \sqrt {-x^{3}-1}}{9}\) | \(27\) |
elliptic | \(-\frac {2 x^{3} \sqrt {-x^{3}-1}}{9}+\frac {4 \sqrt {-x^{3}-1}}{9}\) | \(27\) |
gosper | \(\frac {2 \left (1+x \right ) \left (x^{2}-x +1\right ) \left (x^{3}-2\right )}{9 \sqrt {-x^{3}-1}}\) | \(28\) |
meijerg | \(-\frac {i \left (\frac {4 \sqrt {\pi }}{3}-\frac {\sqrt {\pi }\, \left (-4 x^{3}+8\right ) \sqrt {x^{3}+1}}{6}\right )}{3 \sqrt {\pi }}\) | \(32\) |
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Time = 0.27 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.52 \[ \int \frac {x^5}{\sqrt {-1-x^3}} \, dx=-\frac {2}{9} \, {\left (x^{3} - 2\right )} \sqrt {-x^{3} - 1} \]
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Time = 0.09 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.94 \[ \int \frac {x^5}{\sqrt {-1-x^3}} \, dx=- \frac {2 x^{3} \sqrt {- x^{3} - 1}}{9} + \frac {4 \sqrt {- x^{3} - 1}}{9} \]
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Time = 0.20 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.74 \[ \int \frac {x^5}{\sqrt {-1-x^3}} \, dx=\frac {2}{9} \, {\left (-x^{3} - 1\right )}^{\frac {3}{2}} + \frac {2}{3} \, \sqrt {-x^{3} - 1} \]
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Time = 0.27 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.74 \[ \int \frac {x^5}{\sqrt {-1-x^3}} \, dx=\frac {2}{9} \, {\left (-x^{3} - 1\right )}^{\frac {3}{2}} + \frac {2}{3} \, \sqrt {-x^{3} - 1} \]
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Time = 0.03 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.52 \[ \int \frac {x^5}{\sqrt {-1-x^3}} \, dx=-\frac {2\,\sqrt {-x^3-1}\,\left (x^3-2\right )}{9} \]
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