Expression 1: "f" left parenthesis, "x" , right parenthesis equals negative 10 left brace, 0 less than or equal to "x" less than or equal to 1.8 3 , right bracefx=−100≤x≤1.83
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Expression 2: "f" left parenthesis, "x" , right parenthesis less than or equal to "y" less than or equal to 0fx≤y≤0