07-Jan-2022 23:23:33 ode23_test(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 Test ode23(). predator_test: Use ode23 to compute the solution of the predator/prey differential equation. ode23() used 125 integration steps. Graphics saved as "predator_plot.png" Graphics saved as "predator_phase.png" ode23_test(): Normal end of execution. 07-Jan-2022 23:23:38