Abstract :
In this paper we consider a functional inequality of the form f x1qx2, y1qy2.
Ff x1, y1.qf x2, y2., for each xi, yi.gC, is1, 2, where f : CªR and C is
some cone in R2. If the function f satisfies some conditions we obtain the general
solution. Q 1996 Academic Press, Inc
