- ##
- ## The extended Powell function. See Dennis & Schnabel, Appendix B,
- ## problem #2.
- ##
- ## This function has a minimum at x=(0,0,...,0) with f(x) == 0. The
- ## suggested starting point is x0=(3, -1, 0, 1,..., 3, -1, 0, 1).
- ## Since the number of arguments is variable, we take a vector
- ## instead of its individual components.
- ##
+ %
+ % The extended Powell function. See Dennis & Schnabel, Appendix B,
+ % problem #2.
+ %
+ % This function has a minimum at x=(0,0,...,0) with f(x) == 0. The
+ % suggested starting point is x0=(3, -1, 0, 1,..., 3, -1, 0, 1).
+ % Since the number of arguments is variable, we take a vector
+ % instead of its individual components.
+ %