Test Functions

                      for Unconstrained Global Optimization

Powell Function

r Number of variables: n variables.

r Definition:

 

 

r Search domain: −4 ≤ x_i ≤ 5, i = 1, 2, . . . , n.

r The global minima: x^* =  (3,-1,0,1, …, 3,-1,0,1), f(x^*) = 0.

r MATLAB Code: download powell.m