Expression 1: "f" left parenthesis, "x" , right parenthesis equals sine left parenthesis, "x" , right parenthesis times left parenthesis, negative StartFraction, tan squared left parenthesis, "x" , right parenthesis Over 3 , EndFraction , right parenthesis Superscript, StartFraction, left parenthesis, 1 minus sign left parenthesis, cos "x" , right parenthesis , right parenthesis Over 2 , EndFraction , Baselinefx=sinx·−tan2x31−signcosx2