function g = himmelblau_gradient(x1,x2)
- ##
- ## The gradient of the Himmelblau function. See himmelblau.m for
- ## more information.
- ##
+ %
+ % The gradient of the Himmelblau function. See himmelblau.m for
+ % more information.
+ %
f_x1 = 4*(x1^2 + x2 - 11)*x1 + 2*x2^2 + 2*x1 - 14;
f_x2 = 4*(x2^2 + x1 - 7)*x2 + 2*x1^2 + 2*x2 - 22;
g = [f_x1; f_x2];