function [Minc]=subMinc(u) Minc=zeros(6,4); Minc(1,3)=-1; Minc(2,4)=-1; Minc(3,1)=-1;Minc(3,3)=1; Minc(4,2)=-1;Minc(4,3)=1; Minc(5,1)=-1;Minc(5,4)=1; Minc(6,2)=-1;Minc(6,4)=1; % Barra 1 = m % Barra 2 = p % Barra 3 = S % Barra 4 = R % Imp. de Transf. iría entre Barras 3-4