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Louiscahyadi

Kontes Terbuka Olimpiade Matematika - April 2017 - Bagian B Nomor 1

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Tentukan semua pasangan bilangan real non-negatif $(x,y)$ yang memenuhi $x+y\leq 1$ dan

$$3xy=2x(1-x)+2y(1-y) $$

 

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