2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/140363In this article, we obtain two interesting general inequalities concerning Riemman sums of convex functions, which in particular, sharpen Alzer's inequality and give a suitable converse for it.4 Pages, Inequality theoryClassical Analysis and ODEs26D15, 26A51text