20-May-2021 19:58:05 vanderpol_ode_test(): MATLAB/Octave version 4.2.2 Solve the van der Pol oscillator ODE. Parameter values: mu = 1.5 t0 = 0 y0 = (0.05,0.05) tstop = 20 vanderpol_ode45(): Use ode45() to solve the van der Pol ODE. Number of variable size steps = 57 Graphics saved as "vanderpol_ode45_plot.png" Graphics saved as "vanderpol_ode45_phase.png" vanderpol_midpoint(): Use midpoint() to solve the van der Pol ODE. Number of equal steps = 80 Graphics saved as "vanderpol_midpoint_plot.png" Graphics saved as "vanderpol_midpoint_phase.png" vanderpol_ode_test: Normal end of execution. 20-May-2021 19:58:06