a) $ h[n] = \frac{1}{8}(\delta[n] + \delta[n-8]) + h[n-1] $--Kim415 16:23, 1 March 2009 (UTC)
b) $ H(z) = \frac{1}{8} \frac{\prod_{1}^{8}(z - z_{k})}{z - 1} $
This is the only thing that I can figure out. I'm still working on b) --Kim415 16:23, 1 March 2009 (UTC)
c)
I have no idea.--Kim415 16:23, 1 March 2009 (UTC)