Approximate derivatives as differences: f'(x) ≈ (f(x+h) − f(x))/h. Discretize PDEs on a grid to produce large sparse linear systems. Stability governed by CFL condition for time-stepping.
Approximate derivatives as differences: f'(x) ≈ (f(x+h) − f(x))/h. Discretize PDEs on a grid to produce large sparse linear systems. Stability governed by CFL condition for time-stepping.