30 November 2023 8:25:03.105 PM bdf2_test(): Fortran90 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. 30 November 2023 8:25:03.106 PM