表达式3: left parenthesis, negative 1 , right parenthesis Superscript, round left parenthesis, StartFraction, "x" Over pi , EndFraction , right parenthesis , Baseline times "f" left parenthesis, "x" , right parenthesis−1roundxπ·fx
3
表达式4: cosine left parenthesis, "x" , right parenthesiscosx
4
表达式5: "g" left parenthesis, "x" , right parenthesis equals StartFraction, 1 Over StartRoot, 1 plus tan squared left parenthesis, "x" , right parenthesis , EndRoot , EndFractiongx=11+tan2x
5
表达式6: left parenthesis, negative 1 , right parenthesis Superscript, round left parenthesis, StartFraction, "x" Over pi , EndFraction , right parenthesis , Baseline times "g" left parenthesis, "x" , right parenthesis−1roundxπ·gx