Expression 1: "f" left parenthesis, "x" , right parenthesis equals 38.8 7 left brace, 0 less than or equal to "x" less than or equal to 3 , right brace Has graph. To audio trace, press ALT+T.fx=38.870≤x≤3
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Expression 2: "f" left parenthesis, "x" , right parenthesis greater than or equal to "y" greater than or equal to 0 Has graph. To audio trace, press ALT+T.fx≥y≥0