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13-May-2025 11:09:47

boundary_locus2_test():
  MATLAB/Octave version 9.11.0.2358333 (R2021b) Update 7
  boundary_locus2() plots the absolute stability boundary
  for an ODE solution method.
  Graphics saved as "ab2.png"
  Graphics saved as "ab3.png"
  Graphics saved as "ab4.png"
  Graphics saved as "euler_backward.png"
  Graphics saved as "euler_backward_filtered.png"
  Graphics saved as "euler_forward.png"
  Graphics saved as "gear.png"
  Graphics saved as "leapfrog.png"

  For the trapezoidal rule, the function f(z) has a 
  singularity at z=-1.  Correspondingly, the stability
  region is infinite, and the boundary has to go to infinity.
  To avoid this problem, we restrict the angle t to avoid
  z = -1.
  Graphics saved as "trapezoidal.png"

boundary_locus2_test():
  Normal end of execution.