Question Number 115218 by Ar Brandon last updated on 24/Sep/20

Show that ∀n∈N, ∀u_0 ,u_1 ,...,u_n ,v_0 ,v_1 ,...v_n ∈C  ∀k≤n; u_k =Σ_(i=0) ^k  ((k),(i) )v_i ⇔∀k≤n; v_k =Σ_(i=0) ^k (−1)^(k−1)  ((k),(i) )u_i