08-Jan-2022 10:02:42 spring_double_ode_test(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 Solve the double spring ODE. Parameter values: mass #1 = 3 mass #2 = 5 stiffness #1 = 1 stiffness #2 = 10 t0 = 0 u0 = [0,1,0,0] tstop = 50 spring_double_ode23(): Use ode23() to solve the double spring ODE. Number of variable steps = 553 Graphics saved in "spring_double_ode23.png" spring_double_ode_test(): Normal end of execution. 08-Jan-2022 10:02:48