Expression 1: "f" left parenthesis, "x" , right parenthesis equals 15.4 4 left brace, 0 less than or equal to "x" less than or equal to 8.6 3 , right bracefx=15.440≤x≤8.63
1
Expression 2: "f" left parenthesis, "x" , right parenthesis greater than or equal to "y" greater than or equal to 0fx≥y≥0