Exercise 1. Consider the continuous-time signal where T >0 is a constant value. A) Sketch and label carefully (2T-3t) Ipt. 10]. Exercise 2. Consider the continuous-time signal z(t) = [u(t)-u(t-T)] 2e/2, where T >0 is a real positive constant. A) Derive the energy and the time-averaged power of signal r(t) over -oot o lpt. 10) Exercise 3. A continuous-time LTI system has impulse response h(t) = u(t) 2 cos(t) where u(t) is the causal unit step function. A) Determine whether or not the system is (pt. 10): e memoryless, e causal . stable. Exercise 4. Consider the continuous-time LTI system with the following input (a) output (u) relatis t-B y(t) = z(r) dr-z(t-A) I-A where 0