Integrand size = 13, antiderivative size = 25 \[ \int \frac {x^8}{\sqrt [4]{1+x^3}} \, dx=\frac {4}{693} \left (1+x^3\right )^{3/4} \left (32-24 x^3+21 x^6\right ) \]
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Time = 0.01 (sec) , antiderivative size = 40, normalized size of antiderivative = 1.60, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {272, 45} \[ \int \frac {x^8}{\sqrt [4]{1+x^3}} \, dx=\frac {4}{33} \left (x^3+1\right )^{11/4}-\frac {8}{21} \left (x^3+1\right )^{7/4}+\frac {4}{9} \left (x^3+1\right )^{3/4} \]
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Rule 45
Rule 272
Rubi steps \begin{align*} \text {integral}& = \frac {1}{3} \text {Subst}\left (\int \frac {x^2}{\sqrt [4]{1+x}} \, dx,x,x^3\right ) \\ & = \frac {1}{3} \text {Subst}\left (\int \left (\frac {1}{\sqrt [4]{1+x}}-2 (1+x)^{3/4}+(1+x)^{7/4}\right ) \, dx,x,x^3\right ) \\ & = \frac {4}{9} \left (1+x^3\right )^{3/4}-\frac {8}{21} \left (1+x^3\right )^{7/4}+\frac {4}{33} \left (1+x^3\right )^{11/4} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.00 \[ \int \frac {x^8}{\sqrt [4]{1+x^3}} \, dx=\frac {4}{693} \left (1+x^3\right )^{3/4} \left (32-24 x^3+21 x^6\right ) \]
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Result contains higher order function than in optimal. Order 5 vs. order 2.
Time = 0.86 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.68
method | result | size |
meijerg | \(\frac {x^{9} \operatorname {hypergeom}\left (\left [\frac {1}{4}, 3\right ], \left [4\right ], -x^{3}\right )}{9}\) | \(17\) |
trager | \(\left (\frac {4}{33} x^{6}-\frac {32}{231} x^{3}+\frac {128}{693}\right ) \left (x^{3}+1\right )^{\frac {3}{4}}\) | \(21\) |
risch | \(\frac {4 \left (x^{3}+1\right )^{\frac {3}{4}} \left (21 x^{6}-24 x^{3}+32\right )}{693}\) | \(22\) |
pseudoelliptic | \(\frac {4 \left (x^{3}+1\right )^{\frac {3}{4}} \left (21 x^{6}-24 x^{3}+32\right )}{693}\) | \(22\) |
gosper | \(\frac {4 \left (1+x \right ) \left (x^{2}-x +1\right ) \left (21 x^{6}-24 x^{3}+32\right )}{693 \left (x^{3}+1\right )^{\frac {1}{4}}}\) | \(33\) |
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none
Time = 0.25 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.84 \[ \int \frac {x^8}{\sqrt [4]{1+x^3}} \, dx=\frac {4}{693} \, {\left (21 \, x^{6} - 24 \, x^{3} + 32\right )} {\left (x^{3} + 1\right )}^{\frac {3}{4}} \]
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Time = 0.76 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.64 \[ \int \frac {x^8}{\sqrt [4]{1+x^3}} \, dx=\frac {4 x^{6} \left (x^{3} + 1\right )^{\frac {3}{4}}}{33} - \frac {32 x^{3} \left (x^{3} + 1\right )^{\frac {3}{4}}}{231} + \frac {128 \left (x^{3} + 1\right )^{\frac {3}{4}}}{693} \]
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none
Time = 0.20 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.12 \[ \int \frac {x^8}{\sqrt [4]{1+x^3}} \, dx=\frac {4}{33} \, {\left (x^{3} + 1\right )}^{\frac {11}{4}} - \frac {8}{21} \, {\left (x^{3} + 1\right )}^{\frac {7}{4}} + \frac {4}{9} \, {\left (x^{3} + 1\right )}^{\frac {3}{4}} \]
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Time = 0.27 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.12 \[ \int \frac {x^8}{\sqrt [4]{1+x^3}} \, dx=\frac {4}{33} \, {\left (x^{3} + 1\right )}^{\frac {11}{4}} - \frac {8}{21} \, {\left (x^{3} + 1\right )}^{\frac {7}{4}} + \frac {4}{9} \, {\left (x^{3} + 1\right )}^{\frac {3}{4}} \]
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Time = 5.12 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.80 \[ \int \frac {x^8}{\sqrt [4]{1+x^3}} \, dx={\left (x^3+1\right )}^{3/4}\,\left (\frac {4\,x^6}{33}-\frac {32\,x^3}{231}+\frac {128}{693}\right ) \]
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