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Eventually constant solutions of a rational difference equation

We describe all the solutions of a rational difference equation from Putnam’s mathematical competition, which are eventually equal to its positive equilibrium x ¯ = 1 . As a consequence we give a new, elegant and short proof of the fact that the equation has a positive solution which is not eventual...

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Bibliographic Details
Published in:Applied mathematics and computation 2009-09, Vol.215 (2), p.854-856
Main Authors: IRICANIN, Bratislav, STEVIC, Stevo
Format: Article
Language:English
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Summary:We describe all the solutions of a rational difference equation from Putnam’s mathematical competition, which are eventually equal to its positive equilibrium x ¯ = 1 . As a consequence we give a new, elegant and short proof of the fact that the equation has a positive solution which is not eventually equal to one. Moreover, we show that almost all solutions of the equation are not eventually equal to one.
ISSN:0096-3003
1873-5649
DOI:10.1016/j.amc.2009.05.044