Refinements of Jordans inequalityReport as inadecuate

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Journal of Inequalities and Applications

, 2011:130

First Online: 05 December 2011Received: 09 April 2011Accepted: 05 December 2011


A method of sharpening Jordan-s inequality proposed by Li-Li would be improved. Increasing lower bounds and decreasing upper bounds for strengthened Jordan-s inequality can be constructed and the errors of lower-upper bounds for strengthened Jordan-s inequality can be estimated.

2010 Mathematics Subject Classification : 26D05; 26D15.

KeywordsJordan-s inequality lower bound upper bound  Download fulltext PDF

Author: Meng-Kuang Kuo



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