I'm attempting to solve a control systems problem, however I'm stuck on the first step. The system is specified with a difference equation: [tex]y(k+2)+y(k+1)+0.16y(k)=u(k+1)+2u(k)[/tex] So I need to convert this back onto the usual pulse transfer function form to use one of the standard methods of deriving the matrix. The thing is I can't get to the transfer function. Due to the k shifts there are all of the initial condition constant terms such as z*y(0) that don't appear in the solutions at all. Neither the problem or the solution specify that those conditions are zero. Are the initial conditions just being ignored, or am I missing something here? Thanks!