Expression 2: StartFraction, exp left parenthesis, negative StartNestedFraction, tan left parenthesis, "x" , right parenthesis squared NestedOver "m" squared , EndNestedFraction , right parenthesis Over pi cos left parenthesis, "x" , right parenthesis to the 4th power , EndFraction left brace, negative StartFraction, pi Over 2 , EndFraction less than "x" less than StartFraction, pi Over 2 , EndFraction , right brace Has graph. To audio trace, press ALT+T.exp−tanx2m2πcosx4−π2<x<π2