Optimal. Leaf size=14 \[ -2 \text{EllipticF}\left (\sin ^{-1}\left (\sqrt{4-x}\right ),-1\right ) \]
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Rubi [A] time = 0.0303149, antiderivative size = 14, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 23, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.13, Rules used = {1982, 689, 221} \[ -2 F\left (\left .\sin ^{-1}\left (\sqrt{4-x}\right )\right |-1\right ) \]
Antiderivative was successfully verified.
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Rule 1982
Rule 689
Rule 221
Rubi steps
\begin{align*} \int \frac{1}{\sqrt{4-x} \sqrt{(5-x) (-3+x)}} \, dx &=\int \frac{1}{\sqrt{4-x} \sqrt{-15+8 x-x^2}} \, dx\\ &=-\left (2 \operatorname{Subst}\left (\int \frac{1}{\sqrt{1-x^4}} \, dx,x,\sqrt{4-x}\right )\right )\\ &=-2 F\left (\left .\sin ^{-1}\left (\sqrt{4-x}\right )\right |-1\right )\\ \end{align*}
Mathematica [C] time = 0.0078893, size = 28, normalized size = 2. \[ -2 \sqrt{4-x} \text{HypergeometricPFQ}\left (\left \{\frac{1}{4},\frac{1}{2}\right \},\left \{\frac{5}{4}\right \},(x-4)^2\right ) \]
Antiderivative was successfully verified.
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Maple [B] time = 0.011, size = 35, normalized size = 2.5 \begin{align*} -2\,{\frac{{\it EllipticF} \left ( \sqrt{-x+4},i \right ) \sqrt{5-x}\sqrt{-3+x}}{\sqrt{- \left ( -5+x \right ) \left ( -3+x \right ) }}} \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{-{\left (x - 3\right )}{\left (x - 5\right )}} \sqrt{-x + 4}}\,{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^{2} + 8 \, x - 15} \sqrt{-x + 4}}{x^{3} - 12 \, x^{2} + 47 \, x - 60}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{\sqrt{- \left (x - 5\right ) \left (x - 3\right )} \sqrt{4 - x}}\, dx \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{-{\left (x - 3\right )}{\left (x - 5\right )}} \sqrt{-x + 4}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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