Optimal. Leaf size=30 \[ \sqrt{4-3 x^2}-2 \tanh ^{-1}\left (\frac{1}{2} \sqrt{4-3 x^2}\right ) \]
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Rubi [A] time = 0.0165422, antiderivative size = 30, normalized size of antiderivative = 1., 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 = {266, 50, 63, 206} \[ \sqrt{4-3 x^2}-2 \tanh ^{-1}\left (\frac{1}{2} \sqrt{4-3 x^2}\right ) \]
Antiderivative was successfully verified.
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Rule 266
Rule 50
Rule 63
Rule 206
Rubi steps
\begin{align*} \int \frac{\sqrt{4-3 x^2}}{x} \, dx &=\frac{1}{2} \operatorname{Subst}\left (\int \frac{\sqrt{4-3 x}}{x} \, dx,x,x^2\right )\\ &=\sqrt{4-3 x^2}+2 \operatorname{Subst}\left (\int \frac{1}{\sqrt{4-3 x} x} \, dx,x,x^2\right )\\ &=\sqrt{4-3 x^2}-\frac{4}{3} \operatorname{Subst}\left (\int \frac{1}{\frac{4}{3}-\frac{x^2}{3}} \, dx,x,\sqrt{4-3 x^2}\right )\\ &=\sqrt{4-3 x^2}-2 \tanh ^{-1}\left (\frac{1}{2} \sqrt{4-3 x^2}\right )\\ \end{align*}
Mathematica [A] time = 0.0052576, size = 30, normalized size = 1. \[ \sqrt{4-3 x^2}-2 \tanh ^{-1}\left (\frac{1}{2} \sqrt{4-3 x^2}\right ) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.004, size = 25, normalized size = 0.8 \begin{align*} \sqrt{-3\,{x}^{2}+4}-2\,{\it Artanh} \left ( 2\,{\frac{1}{\sqrt{-3\,{x}^{2}+4}}} \right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.42568, size = 47, normalized size = 1.57 \begin{align*} \sqrt{-3 \, x^{2} + 4} - 2 \, \log \left (\frac{4 \, \sqrt{-3 \, x^{2} + 4}}{{\left | x \right |}} + \frac{8}{{\left | x \right |}}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.96684, size = 70, normalized size = 2.33 \begin{align*} \sqrt{-3 \, x^{2} + 4} + 2 \, \log \left (\frac{\sqrt{-3 \, x^{2} + 4} - 2}{x}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 1.48456, size = 75, normalized size = 2.5 \begin{align*} \begin{cases} i \sqrt{3 x^{2} - 4} - 2 \log{\left (x \right )} + \log{\left (x^{2} \right )} + 2 i \operatorname{asin}{\left (\frac{2 \sqrt{3}}{3 x} \right )} & \text{for}\: \frac{3 \left |{x^{2}}\right |}{4} > 1 \\\sqrt{4 - 3 x^{2}} + \log{\left (x^{2} \right )} - 2 \log{\left (\sqrt{1 - \frac{3 x^{2}}{4}} + 1 \right )} & \text{otherwise} \end{cases} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.04958, size = 51, normalized size = 1.7 \begin{align*} \sqrt{-3 \, x^{2} + 4} - \log \left (\sqrt{-3 \, x^{2} + 4} + 2\right ) + \log \left (-\sqrt{-3 \, x^{2} + 4} + 2\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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