数学建模与数学实验（第3版）课件+matlab

				clear
				a=[1.25 8.75 0.5 5.75 3 7.25];
				b=[1.25 0.75 4.75 5 6.5 7.75];
				d=[3 5 4 7 6 11];
				x=[5 2];
				y=[1 7];
				e=[20 20];
				
				for  i=1:6
				   for j=1:2
				      aa(i,j)=sqrt((x(j)-a(i))^2+(y(j)-b(i))^2);
				   end
				end
				
				CC=[aa(:,1); aa(:,2)]';
				A=[1 1 1 1 1 1 0 0 0 0 0 0
				   0 0 0 0 0 0 1 1 1 1 1 1];
				B=[20;20];
				Aeq=[1 0 0 0 0 0 1 0 0 0 0 0
				    0 1 0 0 0 0 0 1 0 0 0 0 
				    0 0 1 0 0 0 0 0 1 0 0 0 
				    0 0 0 1 0 0 0 0 0 1 0 0 
				    0 0 0 0 1 0 0 0 0 0 1 0 
				    0 0 0 0 0 1 0 0 0 0 0 1 ];
				beq=[d(1);d(2);d(3);d(4);d(5);d(6)];
				VLB=[0 0 0 0 0 0 0 0 0 0 0 0];VUB=[];
				x0=[1 2 3 0 1 0 0 1 0 1 0 1];
				[xx,fval]=linprog(CC,A,B,Aeq,beq,VLB,VUB,x0)