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W2034751415 abstract "Let ψ denote the psi (or digamma) function. We determine the values of theparameters p, q and r such that ψ(n) ≈ ln(n + p) - <img border=0 width=32 height=32 src=../../../../../img/revistas/cam/v31n1/a05img01.jpg align=absmiddle> is the best approximations. Also, we present closer bounds for psi function, which sharpens some known results due to Muqattash and Yahdi, Qi and Guo, and Mortici. Mathematical subject classification: 33B15, 26D15." @default.
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W2034751415 date "2012-01-01" @default.
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W2034751415 title "Sharpness of Muqattash-Yahdi problem" @default.
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W2034751415 doi "https://doi.org/10.1590/s1807-03022012000100005" @default.
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