Conc.interj."Grigore Moisil" Urziceni 2010 probl.2

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Andi Brojbeanu
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Conc.interj."Grigore Moisil" Urziceni 2010 probl.2

Post by Andi Brojbeanu »

Sa se determine toate intervalele \( I=[a,b], a<b, a,b \in \mathb{R} \) care au proprietatea: pentru orice \( x, y\in I \) rezulta ca \( x\cdot y \in I \).
Nicolae Papacu, Slobozia
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