Geodesic
Trigonometric polynomials, continued
Matematičeskoe obrazovanie, Tome 74 (2015) no. 2, pp. 27-41.

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: factorization of trigonometric polynomials, trigonometric equations, the solution by roots selection. 
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     author = {E. Z. Skvortsova},
     title = {Trigonometric polynomials, continued},
     journal = {Matemati\v{c}eskoe obrazovanie},
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     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2015_74_2_a2/}
}
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E. Z. Skvortsova. Trigonometric polynomials, continued. Matematičeskoe obrazovanie, Tome 74 (2015) no. 2, pp. 27-41. http://geodesic.mathdoc.fr/item/MO_2015_74_2_a2/