09-Oct-2025 19:25:07 doughnut_exact_test(): MATLAB/Octave version 6.4.0 Test doughnut_exact(). Parameter values: m = 3 n = 5 t0 = 0 y0 = (1,1,3) tstop = 10 ans = 1001 3 Graphics saved as "doughnut_exact.png doughnut_exact_test(): Normal end of execution. 09-Oct-2025 19:25:07