Expression 7: "x" equals 5cosine left parenthesis, "y" Subscript, 0 , Baseline , right parenthesis left brace, "y" Subscript, 0 , Baseline less than or equal to "y" less than or equal to exp left parenthesis, "x" , right parenthesis , right bracex=5cosy0y0≤y≤expx
7
Expression 8: "x" equals 5cosine left parenthesis, "y" Subscript, 0 , Baseline , right parenthesis left brace, "y" Subscript, 0 , Baseline greater than or equal to "y" greater than or equal to exp left parenthesis, "x" , right parenthesis , right bracex=5cosy0y0≥y≥expx