A note on the variational method (Rayleigh-Ritz), Galerkin's Method, and the method of least squares

摘要: The variational method (Rayleigh-Ritz), Galerkin's and the of least squares have been utilized extensively in electromagnetic theory to solve various field problems. In most cases, one makes a formal use techniques. this paper, tutorial approach has taken bring out mathematical distinctions between squares. Examples presented illustrate strong weak points each Finally, rates convergence three techniques derived. It is hoped that with appearance application particular technique an problem would be more rigorous rather than formal.