A Sharp Inequality for a Trigonometric Sum
Date
2013ISSN
1660-5446Source
Mediterranean Journal of MathematicsVolume
10Issue
1Pages
313-320Google Scholar check
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We prove that the inequality, holds for all natural numbers n and real numbers x with x ∈ [0, Π]. The sign of equality is valid if and only if n = 1 and x = π /2. © 2012 Springer Basel AG.