1. Verify that the MATLAB code in Ex. 6.16 correctly computes the system frequency response H(Ω). Why does this code require the coefficient vectors A and B to have equal length? 2. Show that the...

1. Verify that the MATLAB code in Ex. 6.16 correctly computes the system frequency response H(Ω). Why does this code require the coefficient vectors A and B to have equal length?

2. Show that the power of a signal x[n] and the power of its bandlimited interpolation xc(t) (defined in Eq. (6.45)) are identical. Hint: Use the fact that certain sinc functions are orthogonal; that is,