A sequence is just an infinite list of numbers (say real
numbers, we often denote these by a0,a1,a2,a3,a4,.....,ak,..... so
that ak denotes the k-th term in the sequence. It is not hard to
see that the set of all sequences, which we will call S, is a
vector space.
a) Consider the subset, F, of all sequences, S, which satisfy:
∀k ≥ 2,a(sub)k = a(sub)k−1 + a(sub)k−2. Prove that F is a vector
subspace of S.
b) Prove that if...