Geodesic
Trigonometric polynomials
Matematičeskoe obrazovanie, Tome 73 (2015) no. 1, pp. 12-26.

Voir la notice de l'article provenant de la source Math-Net.Ru

An introduction to the theory of trigonometric polynomials for high school students, with a set of exercises.
Keywords: trigonometric polynomials, even and odd trigonometric polynomial, degree of trigonometric polynomials, division of trigonometric polynomials, homogeneous trigonometric polynomials. 
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     author = {E. Z. Skvortsova},
     title = {Trigonometric polynomials},
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     url = {http://geodesic.mathdoc.fr/item/MO_2015_73_1_a1/}
}
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E. Z. Skvortsova. Trigonometric polynomials. Matematičeskoe obrazovanie, Tome 73 (2015) no. 1, pp. 12-26. http://geodesic.mathdoc.fr/item/MO_2015_73_1_a1/