Optimal. Leaf size=50 \[ -\frac {1}{2} (1-x) \sqrt {2 x-x^2}-\frac {1}{3} \left (2 x-x^2\right )^{3/2}-\frac {1}{2} \sin ^{-1}(1-x) \]
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Rubi [A]
time = 0.01, antiderivative size = 50, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 4, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.267, Rules used = {654, 626, 633,
222} \begin {gather*} -\frac {1}{2} \text {ArcSin}(1-x)-\frac {1}{3} \left (2 x-x^2\right )^{3/2}-\frac {1}{2} (1-x) \sqrt {2 x-x^2} \end {gather*}
Antiderivative was successfully verified.
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Rule 222
Rule 626
Rule 633
Rule 654
Rubi steps
\begin {align*} \int x \sqrt {2 x-x^2} \, dx &=-\frac {1}{3} \left (2 x-x^2\right )^{3/2}+\int \sqrt {2 x-x^2} \, dx\\ &=-\frac {1}{2} (1-x) \sqrt {2 x-x^2}-\frac {1}{3} \left (2 x-x^2\right )^{3/2}+\frac {1}{2} \int \frac {1}{\sqrt {2 x-x^2}} \, dx\\ &=-\frac {1}{2} (1-x) \sqrt {2 x-x^2}-\frac {1}{3} \left (2 x-x^2\right )^{3/2}-\frac {1}{4} \text {Subst}\left (\int \frac {1}{\sqrt {1-\frac {x^2}{4}}} \, dx,x,2-2 x\right )\\ &=-\frac {1}{2} (1-x) \sqrt {2 x-x^2}-\frac {1}{3} \left (2 x-x^2\right )^{3/2}-\frac {1}{2} \sin ^{-1}(1-x)\\ \end {align*}
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Mathematica [A]
time = 0.07, size = 50, normalized size = 1.00 \begin {gather*} \frac {1}{6} \sqrt {-((-2+x) x)} \left (-3-x+2 x^2-\frac {6 \tanh ^{-1}\left (\frac {1}{\sqrt {\frac {-2+x}{x}}}\right )}{\sqrt {-2+x} \sqrt {x}}\right ) \end {gather*}
Warning: Unable to verify antiderivative.
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Maple [A]
time = 0.42, size = 39, normalized size = 0.78
method | result | size |
risch | \(-\frac {\left (2 x^{2}-x -3\right ) x \left (x -2\right )}{6 \sqrt {-x \left (x -2\right )}}+\frac {\arcsin \left (x -1\right )}{2}\) | \(32\) |
default | \(-\frac {\left (-x^{2}+2 x \right )^{\frac {3}{2}}}{3}-\frac {\left (2-2 x \right ) \sqrt {-x^{2}+2 x}}{4}+\frac {\arcsin \left (x -1\right )}{2}\) | \(39\) |
meijerg | \(\frac {4 i \left (\frac {i \sqrt {\pi }\, \sqrt {x}\, \sqrt {2}\, \left (-10 x^{2}+5 x +15\right ) \sqrt {1-\frac {x}{2}}}{120}-\frac {i \sqrt {\pi }\, \arcsin \left (\frac {\sqrt {2}\, \sqrt {x}}{2}\right )}{4}\right )}{\sqrt {\pi }}\) | \(52\) |
trager | \(\left (\frac {1}{3} x^{2}-\frac {1}{6} x -\frac {1}{2}\right ) \sqrt {-x^{2}+2 x}+\frac {\RootOf \left (\textit {\_Z}^{2}+1\right ) \ln \left (\RootOf \left (\textit {\_Z}^{2}+1\right ) \sqrt {-x^{2}+2 x}+x -1\right )}{2}\) | \(54\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.54, size = 49, normalized size = 0.98 \begin {gather*} -\frac {1}{3} \, {\left (-x^{2} + 2 \, x\right )}^{\frac {3}{2}} + \frac {1}{2} \, \sqrt {-x^{2} + 2 \, x} x - \frac {1}{2} \, \sqrt {-x^{2} + 2 \, x} - \frac {1}{2} \, \arcsin \left (-x + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 1.65, size = 42, normalized size = 0.84 \begin {gather*} \frac {1}{6} \, {\left (2 \, x^{2} - x - 3\right )} \sqrt {-x^{2} + 2 \, x} - \arctan \left (\frac {\sqrt {-x^{2} + 2 \, x}}{x}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int x \sqrt {- x \left (x - 2\right )}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 1.31, size = 29, normalized size = 0.58 \begin {gather*} \frac {1}{6} \, {\left ({\left (2 \, x - 1\right )} x - 3\right )} \sqrt {-x^{2} + 2 \, x} + \frac {1}{2} \, \arcsin \left (x - 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.08, size = 42, normalized size = 0.84 \begin {gather*} -\frac {\sqrt {2\,x-x^2}\,\left (-8\,x^2+4\,x+12\right )}{24}-\frac {\ln \left (x-1-\sqrt {-x\,\left (x-2\right )}\,1{}\mathrm {i}\right )\,1{}\mathrm {i}}{2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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