Q6: Suppose two sequences r1[n] and ra[n] have the fundamental period of N = 4. Their corre- sponding Fourier series coefficients are: 1 do = a3 = ga1 = 1 241 = za2 = 1 and bo = b1 = b2 = b3 = 1 where, ar and b, are Fourier series coefficients of r[n] and ra[n] respectively. Use the multiplication property to determine the Fourier series coefficients of g[n] = 11[n]r2[n]