= = - 5. The aim of this exercise is to describe the golden ratio as a partition of Q. Let p(x) x2 X 1 and let Lt {r E Q : r 0 and p(r) >0}. Let xn for n > 1. Prove that xn E L for n odd and Xn-1 Xn E U7 for n even. = 1+ = = - 5. The aim of this exercise is to describe the golden ratio as a partition of Q. Let p(x) x2 X 1 and let Lt {r E Q : r 0 and p(r) >0}. Let xn for n > 1. Prove that xn E L for n odd and Xn-1 Xn E U7 for n even. = 1+