Integrand size = 16, antiderivative size = 42 \[ \int x \left (9+12 x+4 x^2\right )^{5/2} \, dx=-\frac {1}{8} (3+2 x) \left (9+12 x+4 x^2\right )^{5/2}+\frac {1}{28} \left (9+12 x+4 x^2\right )^{7/2} \]
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Time = 0.01 (sec) , antiderivative size = 42, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {654, 623} \[ \int x \left (9+12 x+4 x^2\right )^{5/2} \, dx=\frac {1}{28} \left (4 x^2+12 x+9\right )^{7/2}-\frac {1}{8} (2 x+3) \left (4 x^2+12 x+9\right )^{5/2} \]
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Rule 623
Rule 654
Rubi steps \begin{align*} \text {integral}& = \frac {1}{28} \left (9+12 x+4 x^2\right )^{7/2}-\frac {3}{2} \int \left (9+12 x+4 x^2\right )^{5/2} \, dx \\ & = -\frac {1}{8} (3+2 x) \left (9+12 x+4 x^2\right )^{5/2}+\frac {1}{28} \left (9+12 x+4 x^2\right )^{7/2} \\ \end{align*}
Time = 0.25 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.64 \[ \int x \left (9+12 x+4 x^2\right )^{5/2} \, dx=\frac {1}{56} (3+2 x)^5 \sqrt {(3+2 x)^2} (-1+4 x) \]
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Time = 2.06 (sec) , antiderivative size = 47, normalized size of antiderivative = 1.12
method | result | size |
gosper | \(\frac {x^{2} \left (64 x^{5}+560 x^{4}+2016 x^{3}+3780 x^{2}+3780 x +1701\right ) \left (\left (2 x +3\right )^{2}\right )^{\frac {5}{2}}}{14 \left (2 x +3\right )^{5}}\) | \(47\) |
default | \(\frac {x^{2} \left (64 x^{5}+560 x^{4}+2016 x^{3}+3780 x^{2}+3780 x +1701\right ) \left (\left (2 x +3\right )^{2}\right )^{\frac {5}{2}}}{14 \left (2 x +3\right )^{5}}\) | \(47\) |
risch | \(\frac {32 \sqrt {\left (2 x +3\right )^{2}}\, x^{7}}{7 \left (2 x +3\right )}+\frac {40 \sqrt {\left (2 x +3\right )^{2}}\, x^{6}}{2 x +3}+\frac {144 \sqrt {\left (2 x +3\right )^{2}}\, x^{5}}{2 x +3}+\frac {270 \sqrt {\left (2 x +3\right )^{2}}\, x^{4}}{2 x +3}+\frac {270 \sqrt {\left (2 x +3\right )^{2}}\, x^{3}}{2 x +3}+\frac {243 \sqrt {\left (2 x +3\right )^{2}}\, x^{2}}{2 \left (2 x +3\right )}\) | \(128\) |
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none
Time = 0.24 (sec) , antiderivative size = 31, normalized size of antiderivative = 0.74 \[ \int x \left (9+12 x+4 x^2\right )^{5/2} \, dx=\frac {32}{7} \, x^{7} + 40 \, x^{6} + 144 \, x^{5} + 270 \, x^{4} + 270 \, x^{3} + \frac {243}{2} \, x^{2} \]
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Time = 0.47 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.29 \[ \int x \left (9+12 x+4 x^2\right )^{5/2} \, dx=\sqrt {4 x^{2} + 12 x + 9} \cdot \left (\frac {16 x^{6}}{7} + \frac {116 x^{5}}{7} + \frac {330 x^{4}}{7} + \frac {450 x^{3}}{7} + \frac {270 x^{2}}{7} + \frac {81 x}{28} - \frac {243}{56}\right ) \]
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Time = 0.27 (sec) , antiderivative size = 44, normalized size of antiderivative = 1.05 \[ \int x \left (9+12 x+4 x^2\right )^{5/2} \, dx=\frac {1}{28} \, {\left (4 \, x^{2} + 12 \, x + 9\right )}^{\frac {7}{2}} - \frac {1}{4} \, {\left (4 \, x^{2} + 12 \, x + 9\right )}^{\frac {5}{2}} x - \frac {3}{8} \, {\left (4 \, x^{2} + 12 \, x + 9\right )}^{\frac {5}{2}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 75 vs. \(2 (34) = 68\).
Time = 0.28 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.79 \[ \int x \left (9+12 x+4 x^2\right )^{5/2} \, dx=\frac {32}{7} \, x^{7} \mathrm {sgn}\left (2 \, x + 3\right ) + 40 \, x^{6} \mathrm {sgn}\left (2 \, x + 3\right ) + 144 \, x^{5} \mathrm {sgn}\left (2 \, x + 3\right ) + 270 \, x^{4} \mathrm {sgn}\left (2 \, x + 3\right ) + 270 \, x^{3} \mathrm {sgn}\left (2 \, x + 3\right ) + \frac {243}{2} \, x^{2} \mathrm {sgn}\left (2 \, x + 3\right ) - \frac {729}{56} \, \mathrm {sgn}\left (2 \, x + 3\right ) \]
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Timed out. \[ \int x \left (9+12 x+4 x^2\right )^{5/2} \, dx=\int x\,{\left (4\,x^2+12\,x+9\right )}^{5/2} \,d x \]
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