Functional Dilemma

Algebra Level 3

Suppose that f ( n + 1 ) = f ( n ) + f ( n − 1 ) f(n+1) = f(n) + f(n-1) for n = 1 , 2 , 3 , … n=1,2,3,\ldots . If f ( 6 ) = 2 f(6) = 2 and f ( 4 ) = 8 f(4) = 8 , what is the value of f ( 3 ) + f ( 5 ) f(3) + f(5) ?


The answer is -20.

Russel Ryan Floresca by Russel Ryan Floresca , 20, Philippines

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1 solution

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Too small...

A Former Brilliant Member - 5 years, 5 months ago

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Sorry. I rushed to give a solution for this haha

Russel Ryan Floresca - 5 years, 5 months ago

Did you get the correct answer?

Russel Ryan Floresca - 5 years, 5 months ago

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Yes, I did, with a similar method.

A Former Brilliant Member - 5 years, 5 months ago

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