Expression 3: "y" equals StartFraction, "e" Over 2 , EndFraction sine left parenthesis, 2 "x" , right parenthesisy=e2sin2x
3
Expression 4: 0 less than or equal to "y" less than or equal to tangent left parenthesis, "x" , right parenthesis left brace, 0 less than or equal to "x" less than or equal to cos to the negative 1st power left parenthesis, "e" Superscript, left parenthesis, negative 1 half , right parenthesis , Baseline , right parenthesis , right brace0≤y≤tanx0≤x≤cos−1e−12
4
Expression 5: 0 less than or equal to "y" less than or equal to StartFraction, "e" Over 2 , EndFraction sine left parenthesis, 2 "x" , right parenthesis left brace, cos to the negative 1st power left parenthesis, "e" Superscript, left parenthesis, negative 1 half , right parenthesis , Baseline , right parenthesis less than or equal to "x" less than or equal to StartFraction, pi Over 2 , EndFraction , right brace0≤y≤e2sin2xcos−1e−12≤x≤π2