// Updated(18-7-07)
// 7.9

N = [0  4 0 1
       -1 8 0 3];
dN = 1;
D = [0 0  1 4 0 1
       0 0 -1 0 0 0];
dD = 2;
C = [1 0 1 1
     0 2 0 1];
dC = 1;
[Y,dY,X,dX,B,dB,A,dA] = xdync(N,dN,D,dD,C,dC)