28-Jul-2021 19:30:02
nonlin_secant_test():
  MATLAB/Octave version 9.9.0.1467703 (R2020b)
  nonlin_secant() is an interactive program to seek
  a root of an equation using the secant method.

  Tolerance = 2.22045e-15
  Number of steps = 11
  a =       -3.000000000005028, f(a) = 4.02274e-11
  b =                       -3, f(b) = 0
  status = "Convergence: very small function value!"

  Tolerance = 2.22045e-14
  Number of steps = 8
  a =        3.790834555849615, f(a) = -9.71978e-10
  b =        3.790834555474779, f(b) = 1.11022e-15
  status = "Convergence: very small function value!"

  Tolerance = 2.22045e-15
  Number of steps = 7
  a =       0.7390851332151758, f(a) = -2.53131e-14
  b =       0.7390851332151607, f(b) = 0
  status = "Convergence: very small function value!"

  Tolerance = 2.22045e-15
  Number of steps = 50
  a =      -0.6394410365311047, f(a) = 1.40888
  b =        7.524666799898133, f(b) = 57.6206
  status = "Failure: too many steps!"

nonlin_secant_test():
  Normal end of execution.
28-Jul-2021 19:30:02