Question: Let f1, f2, . . . , fn , . . . be the Fibonacci sequence. (a) Use mathematical induction to prove that f1 +

Let f1, f2, . . . , fn , . . . be the Fibonacci sequence.
(a) Use mathematical induction to prove that f1 + f2 + . . . + fn = fn +2 − 1.
(b) Find the sum of the first 20 terms of the Fibonacci sequence.

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a The Fibonacci sequence is defined as follows f 1 1 f 2 1 f n f n 2 f n 1 for n 3 By this ... View full answer

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