Expression 4: "Z" left parenthesis, "t" , right parenthesis equals negative 4cosine left parenthesis, 220 "t" plus 240 , right parenthesis Has graph. To audio trace, press ALT+T.Zt=−4cos220t+240
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Time scanner:
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Expression 6: "x" equals "a" equals 0 Has graph. To audio trace, press ALT+T.x=a