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Proyecciones (Antofagasta)

Print version ISSN 0716-0917

Abstract

BATIR, Necdet. An approximation formula for n!. Proyecciones (Antofagasta) [online]. 2013, vol.32, n.2, pp.173-181. ISSN 0716-0917.  http://dx.doi.org/10.4067/S0716-09172013000200006.

We prove the following very accurate approximation formula for the factorial function: This gives better results than the following approximation formula which is established by the author [5] and C. Mortici [16] independently, and gives similar results with which is established by C. Mortici in his very new paper [8].

Keywords : Gamma function; Stirling formula; Euler-Mascheroni constant; harmonic numbers; inequalities; digamma function.

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