Expression 2: "f" left parenthesis, "x" , right parenthesis equals left brace, 0 less than "x" less than or equal to 1 : negative 2 "x" plus 4 , right brace Has graph. To audio trace, press ALT+T.fx=0<x≤1:−2x+4
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Expression 3: "f" left parenthesis, "x" , right parenthesis equals left brace, 1 less than "x" : negative "x" squared plus 3 , right brace Has graph. To audio trace, press ALT+T.fx=1<x:−x2+3