Desolve gives wrong results

[Aries]

(12-24-2019 08:25 AM)COB160 Wrote:  Is there any other way to came out with a symbolic solution of differential equations? Maybe using different function or changing calculator’s Settings

For comparison's sake, let's see how CX II's like:



(y=-sqrt(c-x^2) et (x^2)-c<=0) V (y=sqrt(c-x^2) et (x^2)-c<=0).

Have a pleasant XMas,
Aries