“…Nonlocal problems start out in the papers of Kirchhoff, [8], where he introduced his celebrated equation There are a relevant range of situations in Physics and Technology where problems with nonlocal terms appear, see for instance [1,2,4,10,14] and the survey [13]. In this paper we study an optimal control problem associated to (1.2) in the particular case M (x, r) = a(x)+b(x)r where a(x), b(x) are positive continuous functions.…”