Question

. Consider the sequence defined recursively as a0 = 5, a1 = 16 and ak =...

. Consider the sequence defined recursively as a0 = 5, a1 = 16 and ak = 7ak−1 − 10ak−2 for all integers k ≥ 2. Prove that an = 3 · 2 n + 2 · 5 n for each integer n ≥ 0

Homework Answers

Answer #1

We are going to prove by strong induction, that the given recursive sequence satisfies .

For n=0, and for n=1, .

Now suppose, the given recursive sequence satisfies the answer for all , that is, for all for some . Then, .

Hence, we have proved by induction that the given recursive sequence satisfies .

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