» (y0-y1)'*(y0-y1)
ans =
    0.0033
» (y0-y2)'*(y0-y2)
ans =
    0.0038
» firto2
Num =
     0     1
Den =
    1.0000   -0.2500
a =
     0     1
u =
    0.9683    0.1571    0.1673    0.0987
    0.2420   -0.4187   -0.6895   -0.5392
    0.0603   -0.7158   -0.0843    0.6906
    0.0142   -0.5364    0.6996   -0.4718
s =
    1.0666         0         0         0
         0    0.0046         0         0
         0         0    0.0037         0
         0         0         0    0.0033
v =
    0.9683   -0.1571    0.1673   -0.0987
    0.2420    0.4187   -0.6895    0.5392
    0.0603    0.7158   -0.0843   -0.6906
    0.0142    0.5364    0.6996    0.4718
k =
     1
Ak =
    0.2498
Bk =
    0.9683
Ck =
    1.0328
Num2 =
         0    1.0000
Den2 =
    1.0000   -0.2498
»