Submitted:
07 September 2021
Posted:
08 September 2021
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Abstract
In this lecture notes, we will introduce Asymptotics, then we will give a short glimpse on Perturbation theory (regular versus singular), which plays a crucial role especially in theoretical physics. Our goal is to find Asymptotic series that approximates the values of integrals depending on some parameter or the solutions of differential equations. These methods that lead to obtain more effective algorithms of numerical evaluation are called: Asymptotic Methods.
Keywords:
Regular & Singular Perturbations
; WKB Method
; Watson's Lemma
; Laplace's Method
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