Let {fn} be the Fibonacci sequence starting with f1 = 1 and f2 = 1 and fn = fn-1 + fn-2 for n ? 3. Prove using principle of mathematical induction that fn ? ((1 + ?5) / 2)^(n-2) for all n ? 3.
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Also, 2 > 1 + √5 / 2 = 1.6180. Therefore, the base case holds true. ** Show more…
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