Optimal. Leaf size=12 \[ -2 \text{EllipticF}\left (\sin ^{-1}\left (\frac{1}{\sqrt{x-1}}\right ),2\right ) \]
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Rubi [A] time = 0.0035397, antiderivative size = 12, normalized size of antiderivative = 1., number of steps used = 1, number of rules used = 1, integrand size = 22, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.045, Rules used = {118} \[ -2 F\left (\left .\sin ^{-1}\left (\frac{1}{\sqrt{x-1}}\right )\right |2\right ) \]
Antiderivative was successfully verified.
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Rule 118
Rubi steps
\begin{align*} \int \frac{1}{\sqrt{-3+x} \sqrt{-2+x} \sqrt{-1+x}} \, dx &=-2 F\left (\left .\sin ^{-1}\left (\frac{1}{\sqrt{-1+x}}\right )\right |2\right )\\ \end{align*}
Mathematica [C] time = 0.0332639, size = 59, normalized size = 4.92 \[ \frac{2 i \sqrt{\frac{1}{x-3}+1} \sqrt{\frac{2}{x-3}+1} (x-3) \text{EllipticF}\left (i \sinh ^{-1}\left (\frac{1}{\sqrt{x-3}}\right ),2\right )}{\sqrt{x-2} \sqrt{x-1}} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.031, size = 30, normalized size = 2.5 \begin{align*}{\sqrt{2}\sqrt{-3+x}{\it EllipticF} \left ( \sqrt{3-x},{\frac{\sqrt{2}}{2}} \right ){\frac{1}{\sqrt{3-x}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{\sqrt{x - 1} \sqrt{x - 2} \sqrt{x - 3}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{\sqrt{x - 1} \sqrt{x - 2} \sqrt{x - 3}}{x^{3} - 6 \, x^{2} + 11 \, x - 6}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 6.87323, size = 65, normalized size = 5.42 \begin{align*} - \frac{{G_{6, 6}^{5, 3}\left (\begin{matrix} \frac{1}{2}, 1, 1 & \frac{3}{4}, \frac{3}{4}, \frac{5}{4} \\\frac{1}{4}, \frac{1}{2}, \frac{3}{4}, 1, \frac{5}{4} & 0 \end{matrix} \middle |{\frac{1}{\left (x - 2\right )^{2}}} \right )}}{4 \pi ^{\frac{3}{2}}} + \frac{{G_{6, 6}^{3, 5}\left (\begin{matrix} - \frac{1}{4}, 0, \frac{1}{4}, \frac{1}{2}, \frac{3}{4} & 1 \\0, \frac{1}{2}, 0 & - \frac{1}{4}, \frac{1}{4}, \frac{1}{4} \end{matrix} \middle |{\frac{e^{2 i \pi }}{\left (x - 2\right )^{2}}} \right )}}{4 \pi ^{\frac{3}{2}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{\sqrt{x - 1} \sqrt{x - 2} \sqrt{x - 3}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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