Integrand size = 13, antiderivative size = 25 \[ \int x^3 \left (1+x^2\right )^{3/4} \, dx=\frac {2}{77} \left (1+x^2\right )^{3/4} \left (-4+3 x^2+7 x^4\right ) \]
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Time = 0.01 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.08, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {272, 45} \[ \int x^3 \left (1+x^2\right )^{3/4} \, dx=\frac {2}{11} \left (x^2+1\right )^{11/4}-\frac {2}{7} \left (x^2+1\right )^{7/4} \]
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Rule 45
Rule 272
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int x (1+x)^{3/4} \, dx,x,x^2\right ) \\ & = \frac {1}{2} \text {Subst}\left (\int \left (-(1+x)^{3/4}+(1+x)^{7/4}\right ) \, dx,x,x^2\right ) \\ & = -\frac {2}{7} \left (1+x^2\right )^{7/4}+\frac {2}{11} \left (1+x^2\right )^{11/4} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.80 \[ \int x^3 \left (1+x^2\right )^{3/4} \, dx=\frac {2}{77} \left (1+x^2\right )^{7/4} \left (-4+7 x^2\right ) \]
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Time = 0.82 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.68
method | result | size |
gosper | \(\frac {2 \left (x^{2}+1\right )^{\frac {7}{4}} \left (7 x^{2}-4\right )}{77}\) | \(17\) |
meijerg | \(\frac {x^{4} \operatorname {hypergeom}\left (\left [-\frac {3}{4}, 2\right ], \left [3\right ], -x^{2}\right )}{4}\) | \(17\) |
pseudoelliptic | \(\frac {2 \left (x^{2}+1\right )^{\frac {7}{4}} \left (7 x^{2}-4\right )}{77}\) | \(17\) |
trager | \(\left (\frac {2}{11} x^{4}+\frac {6}{77} x^{2}-\frac {8}{77}\right ) \left (x^{2}+1\right )^{\frac {3}{4}}\) | \(21\) |
risch | \(\frac {2 \left (x^{2}+1\right )^{\frac {3}{4}} \left (7 x^{4}+3 x^{2}-4\right )}{77}\) | \(22\) |
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Time = 0.23 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.84 \[ \int x^3 \left (1+x^2\right )^{3/4} \, dx=\frac {2}{77} \, {\left (7 \, x^{4} + 3 \, x^{2} - 4\right )} {\left (x^{2} + 1\right )}^{\frac {3}{4}} \]
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Time = 0.16 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.64 \[ \int x^3 \left (1+x^2\right )^{3/4} \, dx=\frac {2 x^{4} \left (x^{2} + 1\right )^{\frac {3}{4}}}{11} + \frac {6 x^{2} \left (x^{2} + 1\right )^{\frac {3}{4}}}{77} - \frac {8 \left (x^{2} + 1\right )^{\frac {3}{4}}}{77} \]
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Time = 0.19 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.76 \[ \int x^3 \left (1+x^2\right )^{3/4} \, dx=\frac {2}{11} \, {\left (x^{2} + 1\right )}^{\frac {11}{4}} - \frac {2}{7} \, {\left (x^{2} + 1\right )}^{\frac {7}{4}} \]
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Time = 0.27 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.76 \[ \int x^3 \left (1+x^2\right )^{3/4} \, dx=\frac {2}{11} \, {\left (x^{2} + 1\right )}^{\frac {11}{4}} - \frac {2}{7} \, {\left (x^{2} + 1\right )}^{\frac {7}{4}} \]
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Time = 5.05 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.80 \[ \int x^3 \left (1+x^2\right )^{3/4} \, dx={\left (x^2+1\right )}^{3/4}\,\left (\frac {2\,x^4}{11}+\frac {6\,x^2}{77}-\frac {8}{77}\right ) \]
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