Expression 2: "f" left parenthesis, "t" , right parenthesis equals StartFraction, 3 Over "t" squared plus 1 , EndFraction plus "u" left parenthesis, "t" minus pi , right parenthesis left parenthesis, cos left parenthesis, "t" , right parenthesis , right parenthesis Has graph. To audio trace, press ALT+T.ft=3t2+1+ut−πcost
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Expression 3: "y" equals "f" prime left parenthesis, "t" , right parenthesis Has graph. To audio trace, press ALT+T.y=f′t
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Expression 4: "y" equals "f" prime prime left parenthesis, "t" , right parenthesis Has graph. To audio trace, press ALT+T.y=f′′t