07-Jan-2022 16:00:31 biharmonic_cheby1d_test(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 biharmonic_cheby1d() solves the 1d biharmonic equation using Chebyshev methods. Graphics saved as "biharmonic_cheby1d.png" Maximum error = 1.18933e-14 biharmonic_cheby1d_test(): Normal end of execution. 07-Jan-2022 16:00:35