Abstract

An integral inequality is studied. An answer to an open problem proposed by \textit{F. Qi} [JIPAM, J. Inequal. Pure Appl. Math. 1, No. 2, Paper No. 19, 3 p. (2000; Zbl 0976.26011)] and \textit{Y. Chen} and \textit{J. Kimball} [JIPAM, J. Inequal. Pure Appl. Math. 7, No. 1, Paper No. 4, 4 p. (2006; Zbl 1182.26044)] is given.