Analytical Approximations for the Principal Branch of the Lambert W Function

A geometric based approach for specifying approximations to the Lambert W function, which can achieve any set relative error bound over the interval [0, ∞), is detailed. Approximations that can achieve arbitrarily high accuracy for the interval [-1/e, 0], based on a two point spline approximation, a...

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Bibliographic Details
Main Author: Roy M. Howard
Format: Article
Language:English
Published: Ada Academica 2022-04-01
Series:European Journal of Mathematical Analysis
Online Access:https://adac.ee/index.php/ma/article/view/80