Q1: Choose correct option for a stable system :

1. Roots of the characteristic equation of the system are real and negative
2. Area within the impulse response is finite

ANS:A - I is true, II is true

From Statement 1: Roots of the characteristics equation of the system are real and negative i.e. the poles are on the left half plane. Hence the system is stable. From Statement 2: Area within the impulse response is finite i.e. it is finite duration signal. It produces a bounded output. Hence system is stable. So both the statements are true.