Please, someone help me with using state space

Anyone, Can help me with solving this Differential equation using state space method?

Mu” + Cdu’ + Ku = u”g 

n = 2

Cd = [ 3.24 0 ; 0 3.3 ] ;

K = [ 150 -150 ; -150 300 ] ;

M = [ 50 0 ; 0 50 ] ;

u" = (N,1)  where N > 1000

t = 0 : 30

A= [ zeros(n,n) , eye(n,n)  ;  -K/M , -Cd/M ]
B= [ zeros(n,1)  ;  -ones(n,1) ]
C= [ eye(n,n) , zeros(n,n) ]
D= zeros(n,1)

Does this code can solve it?

Sys = ss( A, B, C, D )

y =lsim( sys,U,t )

Dose it give exact solution?

Thanks, your support and help will be appreciated