Expression 35: "y" equals "f" prime left parenthesis, "F" Subscript, 1 , Baseline , right parenthesis left parenthesis, "x" minus "F" Subscript, 1 , Baseline , right parenthesis plus "f" left parenthesis, "F" Subscript, 1 , Baseline , right parenthesisy=f′F1x−F1+fF1
35
Expression 36: "f" left parenthesis, "x" , right parenthesisfx