Integrand size = 16, antiderivative size = 42 \[ \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx=-\frac {3}{16} (3+2 x) \left (9+12 x+4 x^2\right )^{3/2}+\frac {1}{20} \left (9+12 x+4 x^2\right )^{5/2} \]
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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} \[ \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx=\frac {1}{20} \left (4 x^2+12 x+9\right )^{5/2}-\frac {3}{16} (2 x+3) \left (4 x^2+12 x+9\right )^{3/2} \]
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Rule 623
Rule 654
Rubi steps \begin{align*} \text {integral}& = \frac {1}{20} \left (9+12 x+4 x^2\right )^{5/2}-\frac {3}{2} \int \left (9+12 x+4 x^2\right )^{3/2} \, dx \\ & = -\frac {3}{16} (3+2 x) \left (9+12 x+4 x^2\right )^{3/2}+\frac {1}{20} \left (9+12 x+4 x^2\right )^{5/2} \\ \end{align*}
Time = 0.14 (sec) , antiderivative size = 37, normalized size of antiderivative = 0.88 \[ \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx=\frac {x^2 \sqrt {(3+2 x)^2} \left (135+180 x+90 x^2+16 x^3\right )}{30+20 x} \]
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Time = 2.08 (sec) , antiderivative size = 37, normalized size of antiderivative = 0.88
method | result | size |
gosper | \(\frac {x^{2} \left (16 x^{3}+90 x^{2}+180 x +135\right ) \left (\left (2 x +3\right )^{2}\right )^{\frac {3}{2}}}{10 \left (2 x +3\right )^{3}}\) | \(37\) |
default | \(\frac {x^{2} \left (16 x^{3}+90 x^{2}+180 x +135\right ) \left (\left (2 x +3\right )^{2}\right )^{\frac {3}{2}}}{10 \left (2 x +3\right )^{3}}\) | \(37\) |
risch | \(\frac {8 \sqrt {\left (2 x +3\right )^{2}}\, x^{5}}{5 \left (2 x +3\right )}+\frac {9 \sqrt {\left (2 x +3\right )^{2}}\, x^{4}}{2 x +3}+\frac {18 \sqrt {\left (2 x +3\right )^{2}}\, x^{3}}{2 x +3}+\frac {27 \sqrt {\left (2 x +3\right )^{2}}\, x^{2}}{2 \left (2 x +3\right )}\) | \(86\) |
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Time = 0.25 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.50 \[ \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx=\frac {8}{5} \, x^{5} + 9 \, x^{4} + 18 \, x^{3} + \frac {27}{2} \, x^{2} \]
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Time = 0.36 (sec) , antiderivative size = 41, normalized size of antiderivative = 0.98 \[ \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx=\sqrt {4 x^{2} + 12 x + 9} \cdot \left (\frac {4 x^{4}}{5} + \frac {33 x^{3}}{10} + \frac {81 x^{2}}{20} + \frac {27 x}{40} - \frac {81}{80}\right ) \]
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Time = 0.28 (sec) , antiderivative size = 44, normalized size of antiderivative = 1.05 \[ \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx=\frac {1}{20} \, {\left (4 \, x^{2} + 12 \, x + 9\right )}^{\frac {5}{2}} - \frac {3}{8} \, {\left (4 \, x^{2} + 12 \, x + 9\right )}^{\frac {3}{2}} x - \frac {9}{16} \, {\left (4 \, x^{2} + 12 \, x + 9\right )}^{\frac {3}{2}} \]
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Time = 0.27 (sec) , antiderivative size = 53, normalized size of antiderivative = 1.26 \[ \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx=\frac {8}{5} \, x^{5} \mathrm {sgn}\left (2 \, x + 3\right ) + 9 \, x^{4} \mathrm {sgn}\left (2 \, x + 3\right ) + 18 \, x^{3} \mathrm {sgn}\left (2 \, x + 3\right ) + \frac {27}{2} \, x^{2} \mathrm {sgn}\left (2 \, x + 3\right ) - \frac {243}{80} \, \mathrm {sgn}\left (2 \, x + 3\right ) \]
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Time = 0.05 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.57 \[ \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx=\frac {{\left (4\,x^2+12\,x+9\right )}^{3/2}\,\left (16\,x^2+18\,x-9\right )}{80} \]
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