grandes-ecoles 2018 Q10

grandes-ecoles · France · centrale-maths1__psi Complex numbers 2 Roots of Unity and Cyclotomic Properties
Show that $r_1$ and $r_2$ are nonzero and that $r_1/r_2$ belongs to $\mathbb{U}_{n+1}$.
Show that $r_1$ and $r_2$ are nonzero and that $r_1/r_2$ belongs to $\mathbb{U}_{n+1}$.