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Bablzz/fibonacci.rb

Last active September 18, 2019 09:02
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Fibonacci Binet
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fibonacci.rb
fib = 9
def BinetFib number
phi = ((1 + Math.sqrt(5)) / 2) #or 1.6180339887
divid = phi**number
divider = Math.sqrt(5)
(divid / divider).round
end
puts BinetFib(fib);
# => 34
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