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Fibonacci Hyperbolic Functions
Definition
Let ψ | congruent | 1 + ϕ | = | 1/2(3 + sqrt(5)) | = | 2.61803... (OEIS A104457), where ϕ is the golden ratio, and α | congruent | ln ϕ | = | 0.481212 (OEIS A002390).
Related term
Associated person
Leonardo Fibonacci