“…In references [2-4, 6, 13, 17, 19], readers can find some results about this issue. Many papers have been written by a number of mathematicians concerning inequalities for different classes of convex functions see for instance the recent papers [1,5,[7][8][9][10][11][12]14] and the references within these papers. Let 0 < a < b, throughout this paper we will use…”