>> secant
iteration     a                b          m           f(m)          
  1        1.00000            2.00000     1.16667        -5.79e-01
  2        2.00000            1.16667     1.25311        -2.85e-01
  3        1.16667            1.25311     1.33721        5.39e-02
  4        1.25311            1.33721     1.32385        -3.70e-03
  5        1.33721            1.32385     1.32471        -4.27e-05
  6        1.32385            1.32471     1.32472        3.46e-08
Converged: The function tolerance is satisfied.
>> diary