13.90 Problem number 995

\[ \int \frac {x^2}{\sqrt {1-x^2} \sqrt {2+3 x^2}} \, dx \]

Optimal antiderivative \[ \frac {\EllipticE \left (x , \frac {i \sqrt {6}}{2}\right ) \sqrt {2}}{3}-\frac {\EllipticF \left (x , \frac {i \sqrt {6}}{2}\right ) \sqrt {2}}{3} \]

command

integrate(x^2/(-x^2+1)^(1/2)/(3*x^2+2)^(1/2),x, algorithm="fricas")

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

\[ -\frac {\sqrt {3 \, x^{2} + 2} \sqrt {-x^{2} + 1}}{3 \, x} \]

Fricas 1.3.7 via sagemath 9.3 output

\[ {\rm integral}\left (-\frac {\sqrt {3 \, x^{2} + 2} \sqrt {-x^{2} + 1} x^{2}}{3 \, x^{4} - x^{2} - 2}, x\right ) \]