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Functional equations characterizing the sine and cosine functions over a convex polygon
Author(s)
Ponpetch, Kanet
Laohakosol, Vichian
Mavecha, Sukrawan
Date Issued
January 1, 2019
Type
Article
Abstract
Two functional equations exhibiting functions with a constant sum over points lying in a hyperplane are solved. These functional equations are employed to characterize the sine and cosine functions.
Citation
Applied Mathematics E Notes, 19, 277-287, 2019