Expression 4: "F" left parenthesis, "x" , right parenthesis equals StartFraction, "B" left parenthesis, "x" , right parenthesis Over "B" left parenthesis, 1 , right parenthesis , EndFractionFx=BxB1
4
Expression 5: "x" left parenthesis, 2 left parenthesis, 1 minus "F" left parenthesis, "x" , right parenthesis , right parenthesis plus 1 third "F" left parenthesis, "x" , right parenthesis , right parenthesis plus left parenthesis, 1 minus "x" , right parenthesis left parenthesis, 1 "F" left parenthesis, "x" , right parenthesis plus negative 1 left parenthesis, 1 minus "F" left parenthesis, "x" , right parenthesis , right parenthesis , right parenthesisx21−Fx+13Fx+1−x1Fx+−11−Fx