Expression 3: "g" left parenthesis, "x" , "y" , right parenthesis less than or equal to 0gx,y≤0
3
Expression 4: "f" left parenthesis, "x" , "y" , right parenthesis less than or equal to 0fx,y≤0
4
Expression 5: min left parenthesis, "f" left parenthesis, "x" , "y" , right parenthesis , "f" left parenthesis, negative "x" , "y" , right parenthesis , "g" left parenthesis, "x" , "y" , right parenthesis , right parenthesis less than or equal to 0minfx,y,f−x,y,gx,y≤0