1.12 Branins's rcos function | Contents | 1.14 Goldstein-Price's function |
The Easom function [Eas90] is a unimodal test function, where the global minimum has a small area relative to the search space. The function was inverted for minimization.
fEaso(x1,x2)=-cos(x1)·cos(x2)·exp(-((x1-pi)^2+(x2-pi)^2));
-100<=x(i)<=100, i=1:2
.
f(x1,x2)=-1;
(x1,x2)=(pi,pi).
This function is implemented in objeaso.