Integrand size = 15, antiderivative size = 52 \[ \int x \sqrt {3 x-4 x^2} \, dx=-\frac {3}{128} (3-8 x) \sqrt {3 x-4 x^2}-\frac {1}{12} \left (3 x-4 x^2\right )^{3/2}-\frac {27}{512} \arcsin \left (1-\frac {8 x}{3}\right ) \]
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Time = 0.01 (sec) , antiderivative size = 52, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.267, Rules used = {654, 626, 633, 222} \[ \int x \sqrt {3 x-4 x^2} \, dx=-\frac {27}{512} \arcsin \left (1-\frac {8 x}{3}\right )-\frac {1}{12} \left (3 x-4 x^2\right )^{3/2}-\frac {3}{128} (3-8 x) \sqrt {3 x-4 x^2} \]
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Rule 222
Rule 626
Rule 633
Rule 654
Rubi steps \begin{align*} \text {integral}& = -\frac {1}{12} \left (3 x-4 x^2\right )^{3/2}+\frac {3}{8} \int \sqrt {3 x-4 x^2} \, dx \\ & = -\frac {3}{128} (3-8 x) \sqrt {3 x-4 x^2}-\frac {1}{12} \left (3 x-4 x^2\right )^{3/2}+\frac {27}{256} \int \frac {1}{\sqrt {3 x-4 x^2}} \, dx \\ & = -\frac {3}{128} (3-8 x) \sqrt {3 x-4 x^2}-\frac {1}{12} \left (3 x-4 x^2\right )^{3/2}-\frac {9}{512} \text {Subst}\left (\int \frac {1}{\sqrt {1-\frac {x^2}{9}}} \, dx,x,3-8 x\right ) \\ & = -\frac {3}{128} (3-8 x) \sqrt {3 x-4 x^2}-\frac {1}{12} \left (3 x-4 x^2\right )^{3/2}-\frac {27}{512} \sin ^{-1}\left (1-\frac {8 x}{3}\right ) \\ \end{align*}
Time = 0.10 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.44 \[ \int x \sqrt {3 x-4 x^2} \, dx=\frac {1}{384} \sqrt {-x (-3+4 x)} \left (-27-24 x+128 x^2\right )+\frac {27 \sqrt {-x (-3+4 x)} \log \left (-2 \sqrt {x}+\sqrt {-3+4 x}\right )}{256 \sqrt {x} \sqrt {-3+4 x}} \]
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Time = 2.10 (sec) , antiderivative size = 38, normalized size of antiderivative = 0.73
method | result | size |
risch | \(-\frac {\left (128 x^{2}-24 x -27\right ) x \left (4 x -3\right )}{384 \sqrt {-x \left (4 x -3\right )}}+\frac {27 \arcsin \left (-1+\frac {8 x}{3}\right )}{512}\) | \(38\) |
default | \(-\frac {\left (-4 x^{2}+3 x \right )^{\frac {3}{2}}}{12}+\frac {27 \arcsin \left (-1+\frac {8 x}{3}\right )}{512}-\frac {3 \left (3-8 x \right ) \sqrt {-4 x^{2}+3 x}}{128}\) | \(41\) |
pseudoelliptic | \(-\frac {27 \arctan \left (\frac {\sqrt {-4 x^{2}+3 x}}{2 x}\right )}{256}+\frac {\left (256 x^{2}-48 x -54\right ) \sqrt {-4 x^{2}+3 x}}{768}\) | \(44\) |
meijerg | \(\frac {27 i \left (\frac {i \sqrt {\pi }\, \sqrt {x}\, \sqrt {3}\, \left (-\frac {640}{9} x^{2}+\frac {40}{3} x +15\right ) \sqrt {-\frac {4 x}{3}+1}}{90}-\frac {i \sqrt {\pi }\, \arcsin \left (\frac {2 \sqrt {3}\, \sqrt {x}}{3}\right )}{4}\right )}{64 \sqrt {\pi }}\) | \(52\) |
trager | \(\left (\frac {1}{3} x^{2}-\frac {1}{16} x -\frac {9}{128}\right ) \sqrt {-4 x^{2}+3 x}+\frac {27 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \ln \left (-8 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) x +3 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right )+4 \sqrt {-4 x^{2}+3 x}\right )}{512}\) | \(64\) |
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Time = 0.25 (sec) , antiderivative size = 43, normalized size of antiderivative = 0.83 \[ \int x \sqrt {3 x-4 x^2} \, dx=\frac {1}{384} \, {\left (128 \, x^{2} - 24 \, x - 27\right )} \sqrt {-4 \, x^{2} + 3 \, x} - \frac {27}{256} \, \arctan \left (\frac {\sqrt {-4 \, x^{2} + 3 \, x}}{2 \, x}\right ) \]
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Time = 0.28 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.65 \[ \int x \sqrt {3 x-4 x^2} \, dx=\sqrt {- 4 x^{2} + 3 x} \left (\frac {x^{2}}{3} - \frac {x}{16} - \frac {9}{128}\right ) + \frac {27 \operatorname {asin}{\left (\frac {8 x}{3} - 1 \right )}}{512} \]
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Time = 0.27 (sec) , antiderivative size = 49, normalized size of antiderivative = 0.94 \[ \int x \sqrt {3 x-4 x^2} \, dx=-\frac {1}{12} \, {\left (-4 \, x^{2} + 3 \, x\right )}^{\frac {3}{2}} + \frac {3}{16} \, \sqrt {-4 \, x^{2} + 3 \, x} x - \frac {9}{128} \, \sqrt {-4 \, x^{2} + 3 \, x} - \frac {27}{512} \, \arcsin \left (-\frac {8}{3} \, x + 1\right ) \]
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Time = 0.27 (sec) , antiderivative size = 32, normalized size of antiderivative = 0.62 \[ \int x \sqrt {3 x-4 x^2} \, dx=\frac {1}{384} \, {\left (8 \, {\left (16 \, x - 3\right )} x - 27\right )} \sqrt {-4 \, x^{2} + 3 \, x} + \frac {27}{512} \, \arcsin \left (\frac {8}{3} \, x - 1\right ) \]
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Time = 9.11 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.85 \[ \int x \sqrt {3 x-4 x^2} \, dx=-\frac {\sqrt {3\,x-4\,x^2}\,\left (-128\,x^2+24\,x+27\right )}{384}-\frac {\ln \left (x-\frac {3}{8}-\frac {\sqrt {-x\,\left (4\,x-3\right )}\,1{}\mathrm {i}}{2}\right )\,27{}\mathrm {i}}{512} \]
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