function H=htest10(x)
% Gradient of Edgar & Himmelblau, 1988
% x0 = [1, 1]'
% xo = [0, 0]'
% S(xo) = 0

H(1,1)=8;
H(1,2)=-2;
H(2,1)=H(1,2);
H(2,2)=2;
