Tue Oct 19 11:24:10 2021 backward_euler_fixed_test(): Python version: 3.6.9 Test backward_euler_fixed(). humps_backward_euler_fixed(): Solve the humps ODE using backward_euler_fixed(). Graphics saved as "humps_backward_euler_fixed.png" predator_prey_backward_euler_fixed(): Solve the predator prey ODE system using backward_euler_fixed(). Graphics saved as "predator_prey_backward_euler_fixed.png" backward_euler_fixed_test(): Normal end of execution. Tue Oct 19 11:24:11 2021