File list (Check if you may need any files):
Numerical Methods for PDE\ECD_Wave.m
.........................\EF_Euler.m
.........................\fem_basis_ftn.m
.........................\fem_coef.m
.........................\Grank_Nicholson.m
.........................\Helmholtz.m
.........................\Helmholtz_Newton.m
.........................\IB_Euler.m
.........................\possion.m
.........................\Show_Basis.m
.........................\TDE.m
.........................\Wave2.m
Numerical Methods for PDE