A Double Inequality for the Trigamma Function and Its Applications
Zhen-Hang Yang,
Yu-Ming Chu and
Xiao-Jing Tao
Abstract and Applied Analysis, 2014, vol. 2014, 1-9
Abstract:
We prove that and are the best possible parameters in the interval such that the double inequality holds for . As applications, some new approximation algorithms for the circumference ratio and Catalan constant are given. Here, is the trigamma function.
Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlaaa:702718
DOI: 10.1155/2014/702718
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