[CAS] find domain for function?

[CyberAngel]

(11-14-2019 11:20 AM)teerasak Wrote:  @ Aries

You can use domain(solve(y=x^2,x),y). The calculator will give result y>=0

However, this may not work with implicit function e.g abs(x) + abs(y) = 4

Would it help to set:
assume(x>=0)
assume(y>=0)