\[ \int \frac {1}{\sqrt {2-6 x^2+3 x^4}} \, dx \]
Optimal antiderivative \[ \frac {\sqrt {\frac {\cos \left (4 \arctan \left (\frac {x 24^{\frac {1}{4}}}{2}\right )\right )}{2}+\frac {1}{2}}\, \EllipticF \left (\sin \left (2 \arctan \left (\frac {3^{\frac {1}{4}} 2^{\frac {3}{4}} x}{2}\right )\right ), \frac {\sqrt {2+\sqrt {6}}}{2}\right ) \left (2+x^{2} \sqrt {6}\right ) \sqrt {\frac {3 x^{4}-6 x^{2}+2}{\left (2+x^{2} \sqrt {6}\right )^{2}}}\, 6^{\frac {3}{4}}}{12 \cos \left (2 \arctan \left (\frac {3^{\frac {1}{4}} 2^{\frac {3}{4}} x}{2}\right )\right ) \sqrt {3 x^{4}-6 x^{2}+2}} \]
command
integrate(1/(3*x^4-6*x^2+2)^(1/2),x, algorithm="fricas")
Fricas 1.3.8 (sbcl 2.2.11.debian) via sagemath 9.6 output
\[ -\frac {1}{6} \, \sqrt {\sqrt {3} + 3} {\left (\sqrt {3} - 3\right )} {\rm ellipticF}\left (\frac {1}{2} \, \sqrt {2} x \sqrt {\sqrt {3} + 3}, -\sqrt {3} + 2\right ) \]
Fricas 1.3.7 via sagemath 9.3 output
\[ {\rm integral}\left (\frac {1}{\sqrt {3 \, x^{4} - 6 \, x^{2} + 2}}, x\right ) \]