| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1709676 | Applied Mathematics Letters | 2009 | 5 Pages |
Abstract
In this work, we prove that approximate trigonometric functions are bounded. That is, if a non-zero function ff satisfies the inequality |f(x+y)−f(x−y)−2f(x)f(y)|≤φ(x)|f(x+y)−f(x−y)−2f(x)f(y)|≤φ(x) or φ(y)φ(y), then ff is bounded.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Computational Mechanics
Authors
Gwang Hui Kim, Young Whan Lee,