Optimal. Leaf size=29 \[ \frac {1}{2} \left ((-3+x) \sqrt {-((-6+x) x)}-9 \arcsin \left (1-\frac {x}{3}\right )\right ) \]
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Rubi [A]
time = 0.01, antiderivative size = 35, normalized size of antiderivative = 1.21, number of steps
used = 3, number of rules used = 3, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.231, Rules used = {626, 633, 222}
\begin {gather*} -\frac {9}{2} \arcsin \left (1-\frac {x}{3}\right )-\frac {1}{2} \sqrt {6 x-x^2} (3-x) \end {gather*}
Antiderivative was successfully verified.
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Rule 222
Rule 626
Rule 633
Rubi steps
\begin {gather*} \begin {aligned} \text {Integral} &=-\frac {1}{2} (3-x) \sqrt {6 x-x^2}+\frac {9}{2} \int \frac {1}{\sqrt {6 x-x^2}} \, dx\\ &=-\frac {1}{2} (3-x) \sqrt {6 x-x^2}-\frac {3}{4} \text {Subst}\left (\int \frac {1}{\sqrt {1-\frac {x^2}{36}}} \, dx,x,6-2 x\right )\\ &=-\frac {1}{2} (3-x) \sqrt {6 x-x^2}-\frac {9}{2} \arcsin \left (1-\frac {x}{3}\right )\\ \end {aligned} \end {gather*}
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Mathematica [A]
time = 0.04, size = 47, normalized size = 1.62 \begin {gather*} \frac {1}{2} \sqrt {-((-6+x) x)} \left (-3+x+\frac {18 \log \left (\sqrt {-6+x}-\sqrt {x}\right )}{\sqrt {-6+x} \sqrt {x}}\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.18, size = 28, normalized size = 0.97
method | result | size |
risch | \(-\frac {\left (-3+x \right ) \left (-6+x \right ) x}{2 \sqrt {-\left (-6+x \right ) x}}+\frac {9 \arcsin \left (-1+\frac {x}{3}\right )}{2}\) | \(27\) |
default | \(-\frac {\left (-2 x +6\right ) \sqrt {-x^{2}+6 x}}{4}+\frac {9 \arcsin \left (-1+\frac {x}{3}\right )}{2}\) | \(28\) |
pseudoelliptic | \(-9 \arctan \left (\frac {\sqrt {-\left (-6+x \right ) x}}{x}\right )+\frac {\left (-3+x \right ) \sqrt {-\left (-6+x \right ) x}}{2}\) | \(30\) |
meijerg | \(-\frac {18 i \left (-\frac {i \sqrt {\pi }\, \sqrt {x}\, \sqrt {6}\, \left (3-x \right ) \sqrt {-\frac {x}{6}+1}}{36}+\frac {i \sqrt {\pi }\, \arcsin \left (\frac {\sqrt {6}\, \sqrt {x}}{6}\right )}{2}\right )}{\sqrt {\pi }}\) | \(47\) |
trager | \(\left (-\frac {3}{2}+\frac {x}{2}\right ) \sqrt {-x^{2}+6 x}+\frac {9 \mathit {RootOf}\left (\textit {\_Z}^{2}+1\right ) \ln \left (-\mathit {RootOf}\left (\textit {\_Z}^{2}+1\right ) x +\sqrt {-x^{2}+6 x}+3 \mathit {RootOf}\left (\textit {\_Z}^{2}+1\right )\right )}{2}\) | \(57\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.43, size = 36, normalized size = 1.24 \begin {gather*} \frac {1}{2} \, \sqrt {-x^{2} + 6 \, x} x - \frac {3}{2} \, \sqrt {-x^{2} + 6 \, x} - \frac {9}{2} \, \arcsin \left (-\frac {1}{3} \, x + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.56, size = 35, normalized size = 1.21 \begin {gather*} \frac {1}{2} \, \sqrt {-x^{2} + 6 \, x} {\left (x - 3\right )} - 9 \, \arctan \left (\frac {\sqrt {-x^{2} + 6 \, x}}{x}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.27, size = 26, normalized size = 0.90 \begin {gather*} \left (\frac {x}{2} - \frac {3}{2}\right ) \sqrt {- x^{2} + 6 x} + \frac {9 \operatorname {asin}{\left (\frac {x}{3} - 1 \right )}}{2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.48, size = 25, normalized size = 0.86 \begin {gather*} \frac {1}{2} \, \sqrt {-x^{2} + 6 \, x} {\left (x - 3\right )} + \frac {9}{2} \, \arcsin \left (\frac {1}{3} \, x - 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.09, size = 26, normalized size = 0.90 \begin {gather*} \frac {9\,\mathrm {asin}\left (\frac {x}{3}-1\right )}{2}+\left (\frac {x}{2}-\frac {3}{2}\right )\,\sqrt {6\,x-x^2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Chatgpt [F] Failed to verify
time = 1.00, size = 28, normalized size = 0.97 \begin {gather*} \frac {3 \left (x -3\right ) \sqrt {-x^{2}+6 x}}{2}+9 \pi -9 \arccos \left (-1+\frac {2 x}{3}\right ) \end {gather*}
Warning: Unable to verify antiderivative.
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