Expression 5: "f" left parenthesis, "x" , right parenthesis equals left brace, 0 less than or equal to "x" less than 1 : "A" Subscript, 0 , Baseline , 1 less than or equal to "x" less than 2 : "B" Subscript, "f" 0 , Baseline , 2 less than or equal to "x" less than 3 : "B" Subscript, 0 , Baseline , right brace Has graph. To audio trace, press ALT+T.fx=0≤x<1:A0,1≤x<2:Bf0,2≤x<3:B0