Abstract
In this paper we study the behavior of the difference equation
x(n+1) = ax(n) + bx(n)x(n-2/)cx(n-1) + dx(n-2), n = 0, 1,...,
where the initial values x(-2), x(-1), x(0) are arbitrary positive real numbers and a, b, c, d are positive constants. Also, we give the solution of some special cases of this equation.