07-Jan-2022 19:11:45 duffing_ode_test(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 Solve the Duffing ODE. Parameter values: alpha = 1 beta = 5 gamma = 8 delta = 0.02 omega = 0.5 t0 = 0 y0 = (1,0) tstop = 100 duffing_ode45: MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 Use ode45() to solve the duffing ODE. Number of variable size steps = 1669 Graphics saved as "duffing_ode45_y1.png" Graphics saved as "duffing_ode45_y2.png" Graphics saved as "duffing_ode45_phase.png" duffing_ode45(): Normal end of execution. duffing_ode_test: Normal end of execution. 07-Jan-2022 19:11:50