Two Dimensional Cebysev Type Inequalities for Functions Whose Second Derivatives are Co-ordinated $\left( h_{1},h_{2}\right) $-Preinvex

Abstract

In this paper, we extend the identity established in \cite{2} for preinvex functions. Using this novel identity we establish some new Cebysev type inequalities involving functions of two independent variable whose mixed derivatives are co-ordinated $(h_{1},h_{2})$-preinvex.