Expression 3: negative "g" left parenthesis, "x" , right parenthesis−gx
3
Expression 4: "x" equals 0.5 left brace, negative "g" left parenthesis, "x" , right parenthesis less than or equal to "y" less than or equal to "g" left parenthesis, "x" , right parenthesis , right bracex=0.5−gx≤y≤gx
4
Expression 5: "x" equals 1.5 left brace, negative "g" left parenthesis, "x" , right parenthesis less than or equal to "y" less than or equal to "g" left parenthesis, "x" , right parenthesis , right bracex=1.5−gx≤y≤gx