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In the article, we provide a monotonicity rule for the function [Formula: see text], where [Formula: see text] is a positive differentiable and decreasing function defined on [Formula: see text] ([Formula: see text]), and [Formula: see text] and [Formula: see text] are two real power series converging on [Formula: see text] such that the sequence [Formula:(More)
distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract In the paper, we find the greatest values α 1 , α 2 , α 3 , α 4 and the least values β 1 , β 2 , β 3 , β 4 such that the double inequalities α 1 A(a, b) + (1 − α(More)
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