ny=nu=2;L=2;其中ny,nu分辨表示系统的输出和输入的最大时滞;L为系统的自由度; 9 j4 j. n- E" C6 i( _* O" S4 h5 f请问如何用matlab表示下列多项式:3 M, E5 o }# l' s7 k2 p
y(k)=y(k-1)+y(k-2)+u(k-1)+u(k-2)+y^2(k-1)+y^2(k-2)+u^2(k-1)+u^2(k-2)+y(k-1)u(k-1)+y(k-1)u(k-2)+y(k-2)u(k-1)+y(k-2)u(k-2)+y(k-1)y(k-2)+u(k-1)u(k-2); E" ^$ W. e! ^7 _' V, X