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08-Oct-2025 02:16:09

vanderpol_ode_test():
  MATLAB/Octave version 9.11.0.2358333 (R2021b) Update 7
  Solve the van der Pol oscillator ODE.

  parameters:
    mu    = 15
    t0    = 0
    y0    = (0.05,0.05)
    tstop = 100

vanderpol_ode45():
  Use ode45() to solve vanderpol_ode().

  Number of variable size steps = 3649
[Warning: Escaped character '\_' is not valid. See 'doc sprintf' for supported
special characters.] 
[> In vanderpol_ode45 (line 43)
In vanderpol_ode_test (line 44)
In run (line 91)] 
  Graphics saved as "vanderpol_ode45_plot.png"
[Warning: Escaped character '\_' is not valid. See 'doc sprintf' for supported
special characters.] 
[> In vanderpol_ode45 (line 63)
In vanderpol_ode_test (line 44)
In run (line 91)] 
  Graphics saved as "vanderpol_ode45_phase.png"

vanderpol_midpoint():
  Use midpoint() to solve vanderpol_ode().

  Number of equal steps = 2000
[Warning: Escaped character '\_' is not valid. See 'doc sprintf' for supported
special characters.] 
[> In vanderpol_midpoint (line 42)
In vanderpol_ode_test (line 47)
In run (line 91)] 
  Graphics saved as "vanderpol_midpoint_plot.png"
  Graphics saved as "vanderpol_midpoint_phase.png"

vanderpol_ode_test():
  Normal end of execution.
08-Oct-2025 02:16:19