Abstract

In this note, we consider the following rational difference equation: x n + 1 = f ( x n − r 1 , … , x n − r k ) g ( x n − m 1 , … , x n − m l ) + 1 f ( x n − r 1 , … , x n − r k ) + g ( x n − m 1 , … , x n − m l ) , n = 0 , 1 , … , where f ∈ C ( ( 0 , + ∞ ) k , ( 0 , + ∞ ) ) and g ∈ C ( ( 0 , + ∞ ) l , ( 0 , + ∞ ) ) with k , l ∈ { 1 , 2 , … } , 0 ⩽ r 1 < ⋯ < r k and 0 ⩽ m 1 < ⋯ < m l , and the initial values are positive real numbers. We give sufficient conditions under which the unique equilibrium x ¯ = 1 of this equation is globally asymptotically stable, which extends and includes corresponding results obtained in the recent literature.

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