����������� The five relevant questions about the output response are the following:

1. Is the response stable?� That is, will it remain bound when forced by a bound input?
2. If stable, what will be its final steady-state value?
3. Is the response monotonic or oscillatory?
4. If monotonic and stable, how long will it take for the transients to die out?
5. If oscillatory, what is the period of oscillation and how long will it take for the oscillations to die out?