An analysis of the approximation WKB for solving linear differential equations

The WKB approximation or WKB method is a subset of the perturbation methods, used to solve linear differential equations. The usual feature of these equations is to have a large parameter such as λ and a small parameter such as ε. the WKB approximation is useful for describing the propagation of waves with very high frequencies or, equivalently, very small wavelengths. The WKB solutions are approximate solutions, but sometimes they are surprisingly accurate. In this article we’ll discuss this method, which is applicable to linear equations only, It is important to know when this technique can be applied, how to apply it

کلیدواژه ها:

WKB method ، Airy equation ، perturbation