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07-Oct-2025 22:24:29

lindberg_exact_test():
  MATLAB/Octave version 9.11.0.2358333 (R2021b) Update 7
  lindberg_exact() evaluates the exact solution of the Lindberg ODE.

  parameters:
    t0    = 0
    y0    = 1 1 -1 0
    tstop = 3.91

lindberg_resid_test():
  Compute the residuals of the exact solution components
  of the Lindberg ODE.
  Report the reslative errors.

  Relative error in Y1, Y2, Y3, Y4 at selected T values:
   1.0e-15 *

         0         0         0         0
         0         0         0         0
         0         0         0         0
         0         0         0   -0.0851
         0         0         0   -0.0776
         0         0         0   -0.0330
         0         0         0   -0.0574
         0         0         0    0.1992
         0      -Inf         0    0.1272
         0         0    0.0847         0
         0         0         0   -0.2006
         0         0   -0.0362    0.2217
         0         0   -0.0343    0.1236
         0         0    0.0659    0.1387
         0         0   -0.0319    0.0783
         0         0    0.0311   -0.1777
         0         0    0.0608    0.2026
         0         0         0    0.1159
         0         0    0.0443    0.3993
         0         0   -0.0292    0.4600
         0         0   -0.0434    0.4428


lindberg_plot_test():
  Plot the exact solution components of the Lindberg ODE.
  The first two components blow up.
  Graphics saved as "lindberg_exact_y1.png"
  Graphics saved as "lindberg_exact_y2.png"
  Graphics saved as "lindberg_exact_y3.png"
  Graphics saved as "lindberg_exact_y4.png"

lindberg_exact_test():
  Normal end of execution.

07-Oct-2025 22:24:35