Prove with induction the sum of first n Fibonacci numbers with even indices, i.e., f2 +f4 +···+f2n that f2 +f4 +···+f2n =f2n+1 −1.

College Algebra (MindTap Course List)
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ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
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Chapter8: Sequences, Series, And Probability
Section8.5: Mathematical Induction
Problem 30E
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Prove with induction the sum of first n Fibonacci numbers with even indices, i.e., f2 +f4 +···+f2n that

f2 +f4 +···+f2n =f2n+1 −1.  

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