... trinh(6)diro'c thay b3-i phirong trinh sau:A"(k - 1, s -1 ) L(s -1 ) +B"(k - 1, s -1 ) G(s -1 ) =T(S -1 ) , (7)trong d6A" (k - 1, s -1 ) va B" (k - 1, s -1 ) 11 1.cacdatlurcv6icach~ ... gian:S(k)=T(s -1 ) h(k),Q(k)=[A" (k - 1, s -1 ) L(s -1 ) +B" (k - 1, s -1 ) G(s -1 ) ]h(k),(8)trong d6h(k) 11 1.m9t chu~i gia tri bat kY.Kyhieu[" ; -1 " ; -1 <I>(k)=A (k - 1, s )h(k - 1) , ... phirong trmh:A(s -1 ) L(s -1 ) +B(s -1 ) G(S -1 ) =T(s -1 ) ,(6)trong d6T(s -1 ) 11 1.dathucphan anh d~ctinhcan c6 ciia h~ kin, c6 b~c 11 1.max[n +I, m+g].H~ thong diro'cxaydirng 11 1.m9t h~ dieu...