The question is regarding signals and systems. Discrete-time signal 1. Identify each of these signals as either an energy signal or a power signal and find the signal energy of energy signals and the average signal power of power signals. (a) (b) (c) (d) (e) x[n]=u[n] x[n]=u[n]-u[n-10] x[n]=u[n]−2u[n−4]+u[n−10] x[n] = 4 cos(πn) x[n]=5(u[n+3]–u[n−5])–8(u[n−1]-u[n-7]) 2. Find the average signal power of a periodic signal described over one period by x[n]=2n, -2<n<2.