% Price 2 function L. LAURENT -- 17/11/2016 -- luc.laurent@lecnam.net
0001 %% Price 2 function 0002 %L. LAURENT -- 17/11/2016 -- luc.laurent@lecnam.net 0003 0004 % sources available here: 0005 % https://bitbucket.org/luclaurent/optigtest/ 0006 % https://github.com/luclaurent/optigtest/ 0007 0008 % optiGTest - set of testing functions A toolbox to easy manipulate functions. 0009 % Copyright (C) 2017 Luc LAURENT <luc.laurent@lecnam.net> 0010 % 0011 % This program is free software: you can redistribute it and/or modify 0012 % it under the terms of the GNU General Public License as published by 0013 % the Free Software Foundation, either version 3 of the License, or 0014 % (at your option) any later version. 0015 % 0016 % This program is distributed in the hope that it will be useful, 0017 % but WITHOUT ANY WARRANTY; without even the implied warranty of 0018 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0019 % GNU General Public License for more details. 0020 % 0021 % You should have received a copy of the GNU General Public License 0022 % along with this program. If not, see <http://www.gnu.org/licenses/>. 0023 0024 % 0025 %global minimum : f(x)=0.9 for x=(0,0) 0026 % 0027 %Design space: -10<xi<10 0028 0029 0030 function [p,dp]=funPrice2(xx) 0031 0032 %constants 0033 a=1; 0034 b=0.1; 0035 0036 %variables 0037 xxx=xx(:,:,1); 0038 yyy=xx(:,:,2); 0039 0040 %evaluation and derivatives 0041 sx=sin(xxx); 0042 sy=sin(yyy); 0043 ex=exp(-xxx.^2-yyy.^2); 0044 % 0045 p=a+sx.^2+sy.^2-b*ex; 0046 0047 if nargout==2 0048 dp(:,:,1)=2*sx.*cos(xxx)+2*b*xxx.*ex; 0049 dp(:,:,2)=2*sy.*cos(yyy)+2*b*yyy.*ex; 0050 end 0051 end