Optimal. Leaf size=30 \[ \frac{\sqrt{1-x^2} \text{EllipticF}\left (\sin ^{-1}(x),2\right )}{\sqrt{2} \sqrt{x^2-1}} \]
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Rubi [A] time = 0.0150831, antiderivative size = 30, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 2, integrand size = 21, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.095, Rules used = {421, 419} \[ \frac{\sqrt{1-x^2} F\left (\left .\sin ^{-1}(x)\right |2\right )}{\sqrt{2} \sqrt{x^2-1}} \]
Antiderivative was successfully verified.
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Rule 421
Rule 419
Rubi steps
\begin{align*} \int \frac{1}{\sqrt{2-4 x^2} \sqrt{-1+x^2}} \, dx &=\frac{\sqrt{1-x^2} \int \frac{1}{\sqrt{2-4 x^2} \sqrt{1-x^2}} \, dx}{\sqrt{-1+x^2}}\\ &=\frac{\sqrt{1-x^2} F\left (\left .\sin ^{-1}(x)\right |2\right )}{\sqrt{2} \sqrt{-1+x^2}}\\ \end{align*}
Mathematica [A] time = 0.029037, size = 36, normalized size = 1.2 \[ \frac{\sqrt{1-x^2} \text{EllipticF}\left (\sin ^{-1}\left (\sqrt{2} x\right ),\frac{1}{2}\right )}{2 \sqrt{x^2-1}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.023, size = 27, normalized size = 0.9 \begin{align*}{\frac{{\it EllipticF} \left ( x,\sqrt{2} \right ) \sqrt{2}}{2}\sqrt{-{x}^{2}+1}{\frac{1}{\sqrt{{x}^{2}-1}}}} \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^{2} - 1} \sqrt{-4 \, x^{2} + 2}}\,{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} - 1} \sqrt{-4 \, x^{2} + 2}}{2 \,{\left (2 \, x^{4} - 3 \, x^{2} + 1\right )}}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 8.98279, size = 42, normalized size = 1.4 \begin{align*} \frac{\sqrt{2} \left (\begin{cases} - \frac{\sqrt{2} i F\left (\operatorname{asin}{\left (\sqrt{2} x \right )}\middle | \frac{1}{2}\right )}{2} & \text{for}\: x > - \frac{\sqrt{2}}{2} \wedge x < \frac{\sqrt{2}}{2} \end{cases}\right )}{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^{2} - 1} \sqrt{-4 \, x^{2} + 2}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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