1 December 2023 9:37:58.912 AM bdf2_test(): FORTRAN77 version Test bdf2(). predator_prey_bdf2_test() A pair of ordinary differential equations for a population of predators and prey are solved using bdf2(). The exact solution shows periodic behavior with a fixed period and amplitude. predator_prey_bdf2_test: data stored in "predator_prey_data.txt". predator_prey_bdf2_test: plot commands stored in "predator_prey_commands.txt". stiff_bdf2_test(): Solve stiff ODE using bdf2() plot2: data stored in "stiff_data1.txt" and "stiff_data2.txt". plot2: plot commands stored in "stiff_commands.txt". bdf2_test(): Normal end of execution. 1 December 2023 9:37:58.914 AM