Expression 2: "f" left parenthesis, "x" , right parenthesis equals sine left parenthesis, "x" plus "t" , right parenthesis Has graph. To audio trace, press ALT+T.fx=sinx+t
2
Expression 3: "f" prime left parenthesis, "x" , right parenthesis Has graph. To audio trace, press ALT+T.f′x
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Expression 4: "f" prime prime left parenthesis, "x" , right parenthesis Has graph. To audio trace, press ALT+T.f′′x