Sun May 29 07:34:34 2022

bdf2_test():
  Python version: 3.6.9
  Test bdf2().

predator_prey_bdf2():
  A pair of ordinary differential equations for a population
  of predators and prey are solved using the BDF2,
  solving the implicit function using fsolve().

  The exact solution shows periodic behavior, with a fixed
  period and amplitude.
  Graphics saved as "predator_prey_bdf2.png"

stiff_bdf2()
  Use bdf2() to solve the stiff ODE.
  Graphics saved as "stiff_bdf2.png"

bdf2_test():
  Normal end of execution.

Sun May 29 07:34:35 2022