07-Jan-2022 15:54:43 backward_euler_fixed_test(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 Test backward_euler_fixed(). predator_prey_backward_euler_fixed(): A pair of ordinary differential equations for a population of predators and prey are solved using the backward Euler method, solving the implicit function with a fixed point iteration. The exact solution shows periodic behavior, with a fixed period and amplitude. Graphics saved as "predator_prey_backward_euler_fixed.png" predator_prey_backward_euler_fixed(): Normal end of execution. stiff_backward_euler_fixed(): Solve stiff ODE using the backward Euler method. Use a fixed point iteration to solve the implicit equation. Graphics saved as "stiff_backward_euler_fixed.png" stiff_backward_euler_fixed(): Normal end of execution. backward_euler_fixed_test(): Normal end of execution. 07-Jan-2022 15:54:48