摘要
给出了一类二阶非线性微分系统所有解有界充分条件和充要条件。所获结果能够应用于Li啨ｎａｒｄ类型方程。它改进和扩展了文 [1,2 ]等文献关于同样问题的所有结果。
In this paper we obtain a new sufficient condition, as well as, a new necessary and sufficient condition for all solutions of a second order nonlinear differential system to be bounded. These results can be applied to the Liénard type equation. Our results extends and improves all results associated with the same problems in the literatures,et. al.
出处
《工程数学学报》
CSCD
北大核心
2002年第1期135-138,共4页
Chinese Journal of Engineering Mathematics
