2. The continuous-time signal x(t) has the Fourier transform X(j) shown below. x(in) -60π -40 40 60元 With sampling period T, the sampled discrete time signal is a[n] = transform X(e). Please sketch X(e) for the following values of T. (a) T = 1/80. (b) T = 1/60. (c) T = 1/50. (d) T = 1/40. (e) T = 1/30. (f) T = 1/20. x(nT). [n] has Fourier