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What a function

Author: mathforces
Problem has been solved: 37 times

Русский язык | English Language



We define a function $ f: R ^ 2-> R $ such that $ f (x, y) = \frac {3x + 8y} {xy + 24} $. The value of the expression $ f (f (... f (f (f (2020,2019), 2018), 2017), ..., 2), 1) $ can be represented as the irreducible fraction $ \frac {m} { n} $, where $ m $ and $ n $ are natural numbers. What is $ m + n $ equal to?





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