TWO NEW PROOFS OF THE COMPLETE MONOTONICITY OF A FUNCTION INVOLVING THE PSI FUNCTION

By Feng Qi (祁锋), Bai-Ni Guo (郭白妮). 2009

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In the present paper, we give two new proofs for the necessary and sucient condition fi • 1 such that the function x fi (lnx i ˆ(x)) is

Subfields: Applied Mathematics, Geometry and Topology

View Paper: https://www.semanticscholar.org/paper/94f5ef8b18f3a4bcd192a999e26aa43fcff81452