The work is devoted to one of the well-known problems in the approximation of functions by means of Fourier series. It is viewed the approximation of functions of one or two real variables. The latter has a relationship to the processing of two-dimensional images. The aim of work is to explore the Gibbs effect by means of a numerical experiment, which is available for students of technical university, after learning course of functional analysis. It is used mathematical package Maple.
the Gibbs effect, the approximation, Fourier series, image processing, numerical experiment
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