Expression 8: "t" left parenthesis, "x" , right parenthesis equals "f" prime left parenthesis, 11 , right parenthesis times left parenthesis, "x" minus 11 , right parenthesis plus "f" left parenthesis, 11 , right parenthesistx=f′11·x−11+f11
8
Expression 9: "f" prime left parenthesis, 11 , right parenthesisf′11