Expression 4: "x" equals cosine left parenthesis, "y" minus "a" , right parenthesis minus 2.1 left brace, negative 1 plus "a" less than "y" less than 1 plus "a" , right bracex=cosy−a−2.1−1+a<y<1+a
4
Expression 5: "b" equals 3b=3
00
piπ
5
Expression 6: "y" less than or equal to negative StartAbsoluteValue, cos left parenthesis, "x" minus "c" , right parenthesis , EndAbsoluteValuey≤−cosx−c