1. Compute the convolution sum of two discrete time sequences: x[n] = {3,2,1,2} and h[n] = {1,3,1,2} Hint: the upward arrow indicates start of the sequence at n=0. 25 pm 2. Find the output signal y[n] given the following input signals - i) graphically and ii) analytically x[n]=n, 0≤ n ≤6 =3" (0, elsewhere 3. Verify that h[n] = = (1,-2≤ n ≤2 10, elsewhere 25 pt x(1) * 8(t) = x(t) x(1) * u(t) = x(t) dr 25 pt * 4. Determine output y(t) = x(t) h(t) using the following signals - i) graphically and ii) 25 pt: analytically 1 0 1 2 3 1 h(1) 0 1 2 7