Re: calculate


deneme wrote:
Thank you for your reply. Yes it's correct.Our teacher has a problem.

I don't think it is your teacher who has a problem. Assuming you are
given an LTI system with the difference equation

y[n]-5/6.y[n-1]+1/6y[n-2]=x[n]

(which, by the way Jerry, one can also write in the form y[n] = ... )

you can compute its impulse response in the way outlined by Greg.

Other my question is

h[n]=(1/2)^n.u[n] and x[n]=2S[n]+S[n-3]
y[1]=? and y[4]=?

You don't even need h[n]. Just plug x[n] into the above equation and
recursively compute y[n] (set y[n] = 0 for n < 0). Alternatively, use
convolution to compute y[n].

Regards,
Andor

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