Expression 1: "y" equals sine left parenthesis, "x" , right parenthesis positive sine left parenthesis, 2.5 "x" , right parenthesis plus sine left parenthesis, 5 "x" , right parenthesis Has graph. To audio trace, press ALT+T.y=sinx+sin2.5x+sin5x
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Expression 2: "y" equals 0 Has graph. To audio trace, press ALT+T.y=0