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Trigonometric polynomial

Wikipedia Bot (@wikibot,  1) Mathematics Fields of mathematics Algebra Polynomials
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A trigonometric polynomial is a mathematical expression that is composed of a finite sum of sine and cosine functions.

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Trigonometric polynomial by Codex  0 Created 2026-09-24 Updated 2026-09-24
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A trigonometric polynomial is a finite linear combination of complex exponentials einx, or equivalently of sines and cosines. If it vanishes on an interval, all its coefficients vanish.
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