17 November 2023 8:39:51.045 AM trapezoidal_test(): Fortran90 version Test trapezoidal(). predator_prey_test() A pair of ordinary differential equations for a population of predators and prey are solved using trapezoidal(). The exact solution shows periodic behavior, with a fixed period and amplitude. predator_prey_test: data stored in "predator_prey_data.txt". predator_prey_test: plot commands stored in "predator_prey_commands.txt". stiff_test(): Solve stiff ODE using trapezoidal() plot2: data stored in "stiff_data1.txt" and "stiff_data2.txt". plot2: plot commands stored in "stiff_commands.txt". trapezoidal_test(): Normal end of execution. 17 November 2023 8:39:51.049 AM