Expression 4: "W" Subscript, "T" , Baseline less than or equal to 0WT≤0
4
Expression 5: "W" Subscript, "S" , Baseline equals cosine left parenthesis, StartFraction, 2 pi Over "p" , EndFraction "x" , right parenthesis times StartFraction, "p" Over 2 pi , EndFraction plus StartFraction, "p" "b" Over 4 , EndFractionWS=cos2πpx·p2π+pb4
5
Expression 6: "W" Subscript, "S" , Baseline less than or equal to 0WS≤0