Expression 2: "x" equals 4cosine left parenthesis, "y" , right parenthesis plus 2 left brace, negative StartFraction, 4 pi Over 3 , EndFraction less than "y" less than StartFraction, 4 pi Over 3 , EndFraction , right bracex=4cosy+2−4π3<y<4π3
2
Expression 3: "y" equals negative 4cosine left parenthesis, "x" , right parenthesis minus 2 left brace, negative StartFraction, 4 pi Over 3 , EndFraction less than "x" less than StartFraction, 4 pi Over 3 , EndFraction , right bracey=−4cosx−2−4π3<x<4π3
3
Expression 4: "y" equals 4cosine left parenthesis, "x" , right parenthesis plus 2 left brace, negative StartFraction, 4 pi Over 3 , EndFraction less than "x" less than StartFraction, 4 pi Over 3 , EndFraction , right bracey=4cosx+2−4π3<x<4π3