27.85 Problem number 129

\[ \int \frac {1}{\sqrt {2+5 x^2-5 x^4}} \, dx \]

Optimal antiderivative \[ \frac {\EllipticF \left (\frac {x \sqrt {10}}{\sqrt {5+\sqrt {65}}}, \frac {i \sqrt {10}}{4}+\frac {i \sqrt {26}}{4}\right ) \sqrt {2}}{\sqrt {-5+\sqrt {65}}} \]

command

integrate(1/(-5*x^4+5*x^2+2)^(1/2),x, algorithm="fricas")

Fricas 1.3.8 (sbcl 2.2.11.debian) via sagemath 9.6 output

\[ \frac {1}{40} \, {\left (\sqrt {65} \sqrt {2} + 5 \, \sqrt {2}\right )} \sqrt {\sqrt {65} - 5} {\rm ellipticF}\left (\frac {1}{2} \, x \sqrt {\sqrt {65} - 5}, -\frac {1}{4} \, \sqrt {65} - \frac {9}{4}\right ) \]

Fricas 1.3.7 via sagemath 9.3 output

\[ {\rm integral}\left (-\frac {\sqrt {-5 \, x^{4} + 5 \, x^{2} + 2}}{5 \, x^{4} - 5 \, x^{2} - 2}, x\right ) \]