Answer to Question #304889 in Calculus for maxi

Question

Specify and sketch the domain of the following function

f(x,y)= (y^2 + x^2) / √(y^2 - x^2)

Answer 1

Domain: $y^2-x^2>0\implies y^2>x^2\implies y>x,y≥0$ or $y<-x, y≤0$