h2[n] = a"u[n] x[n] y[n} h[n] = B 8{n – 1] hlnl a. Find the impulse response for the overall system b. Find the frequency response of the overall system. Is this system causal? Is this system stable...

Please solve as fast as possible.I`ll upvote.

Extracted text: h2[n] = a"u[n] x[n] y[n} h[n] = B 8{n – 1] hlnl a. Find the impulse response for the overall system b. Find the frequency response of the overall system. Is this system causal? Is this system stable or under what condition would the system be C. stable.