... Cho:a) Tìm dịch tuyến tính: x(n +3) , x(n-2)b)Tìm dịch vòng: x(n +3) 4, x(n-2)4{}4 ,3, 2,1 )(↑=nxx(n)n0 1 2 3 4 3 21a)nx(n-2)0 1 2 3 4 54 3 21nx(n +3) -3 -2 -1 04 3 21∑−==101222222),()(NnknNWknGkX∑−=+=102121211111)(),(NnknNWNnnxknF12).,(),(1212knNWknFknG ... W0[x(1) + x (3) ] = 10. k=1: X(1) = [x(0) - x(2)] + W1[x(1) - x (3) ] = - 2 + j2. k=2: X(2) = [x(0) + x(2)] - W0[x(1) + x (3) ] = - 2. k =3: X (3) = [x(0) - x(2)] - W1[x(1) - x (3) ] = - 2 - j2.► ... [x(1) + x (3) ] = 10.► k=2: X(2) = [x(0) + x(2)] - [x(1) + x (3) ] = - 2.► k=1: X(1) = [x(0) - x(2)] + W1[x(1) - x (3) ] = - 2 + j2.► k =3: X (3) = [x(0) - x(2)] - W1[x(1) - x (3) ] = - 2 - j2.Ví...