aDepartment of Mathematics, College of Huaihua, Huaihua, Hunan 418008, China;bDepartment of Mathematics, Hunan Normal University, Changsha, Hunan 410081, China
Abstract:
This paper is concerned with the nonlinear impulsive delay differential equations with positive and negative coefficients
(*)
Sufficient conditions are obtained for every solution of equation (*) tending to a constant as t→∞.