A simple proof of Oppenheim's double inequality relating to the cosine and sine functions

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Matična publikacija: Journal of mathematical inequalities
6 (2012), 4 ; str. 645-654
Glavni autor: Qi, Feng (-)
Ostali autori: Luo, Qiu-Ming (-), Guo, Bai-Ni
Vrsta građe: Članak
Jezik: eng
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