Find The Domain, Range, And Then Describe The Level Curves Of The Function F(X, Y) = √Y-X. Domain: Y-X>0 => All (X,Y) In XY-Plane Such That Y>X Range: [0, 0) 2 Level Carves: Ly-X = C =D Y-X = C Y X The Level Carves Are Straight Lines Y=X+B = B = C²₂0
why the range is like this not R?