Expression 22: StartFraction, "s" minus "F" Subscript, 1 , Baseline Over "s" minus "F" Subscript, 2 , Baseline , EndFraction equals StartFraction, "s" minus "E" Subscript, 1 , Baseline Over "s" , EndFractions−F1s−F2=s−E1s
22
Expression 23: "F" Subscript, 1 , Baseline equals "s" minus StartFraction, left parenthesis, "s" minus "F" Subscript, 2 , Baseline , right parenthesis left parenthesis, "s" minus "E" Subscript, 1 , Baseline , right parenthesis Over "s" , EndFractionF1=s−s−F2s−E1s