1.13 Easom's function	Contents	1.15 Six-hump camel back function

1 Parametric Optimization

1.14 Goldstein-Price's function

The Goldstein-Price function [GP71] is a global optimization test function.

function definition

fGold(x1,x2)=[1+(x1+x2+1)^2·(19-14·x1+3·x1^2-14·x2+6·x1·x2+3·x2^2)]·[30+(2·x1-3·x2)^2·(18-32·x1+12·x1^2+48·x2-36·x1·x2+27·x2^2)];
-2<=x(i)<=2, i=1:2.

global minimum

f(x1,x2)=3; (x1,x2)=(0,-1).

This function is implemented in objgold.