... with boundary conditions are a set of linear algebraic equations. ... Simultaneous linear algebraic equations. Matrix of coefficients usually tridiagonal ...
truncate (3.36) (3.32) Differentiation by Backward FD ... Truncate all but first term (3.53) Differentiation by Forward FD ... truncate (3.82) (3.78) ...
must be solved as set of simultaneous algebraic equations: Linear Gauss Elimination ... If DEs are linear, solution by Difference Equation Method is simple by matrix ...