12-Jun-2023 06:53:43 biharmonic_cheby1d_test(): MATLAB/Octave version 5.2.0 biharmonic_cheby1d() solves the 1d biharmonic equation using Chebyshev methods. Graphics saved as "biharmonic_cheby1d.png" Maximum error = 5.68989e-15 biharmonic_cheby1d_test(): Normal end of execution. 12-Jun-2023 06:53:43