08-Jan-2022 08:51:58 pendulum_elastic_ode_test(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 Solve the elastic pendulum ODE. Parameter values: g = 9.81 k = 100 l = 1 m = 0.1 t0 = 0 y0 = (1,0,0.01,0) tstop = 10 pendulum_elastic_ode23(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 Use ode23() to solve the elastic pendulum ODE. Number of adaptive steps N = 1513 Graphics saved in "pendulum_elastic_ode23_theta.png" Graphics saved in "pendulum_elastic_ode23_theta_phase.png" Graphics saved in "pendulum_elastic_ode23_nu.png" Graphics saved in "pendulum_elastic_ode23_nu_phase.png" Graphics saved in "pendulum_elastic_ode23_energy.png" pendulum_elastic_ode23: Normal end of execution. pendulum_elastic_midpoint(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 Use midpoint() to solve the elastic pendulum ODE. Number of equal steps to use = 1000 Graphics saved in "pendulum_elastic_midpoint_theta.png" Graphics saved in "pendulum_elastic_midpoint_theta_phase.png" Graphics saved in "pendulum_elastic_midpoint_nu.png" Graphics saved in "pendulum_elastic_midpoint_nu_phase.png" Graphics saved in "pendulum_elastic_midpoint_energy.png" pendulum_elastic_midpoint: Normal end of execution. pendulum_elastic_ode_test: Normal end of execution. 08-Jan-2022 08:52:08