摘要
通过构造一类泛函,借助于两个重要不等式,讨论了方程(r(t)x′(t))+′p(t)x(′t)+q1(t)x(t)+q2(t)x(h(t))=f(t),建立了其属于L.C或L.C∩L.S的充分条件.
In this paper, with auxiliary functions and inequalities, we discuss the second order nonhomogeneous functional differential equation (r(t)x′ (t) )′ +p (t)x′ (t)+q1 (t)x(t)+q2(t)x(h(t) )=f(t) which is assumed to have solutions. We obtain some sufficient conditions under which all solutions x (t) of the equation belong to L^∞ [α, ∞ ) or L^2[α, ∞ )IL^∞[ α,∞ ).
出处
《黄冈师范学院学报》
2006年第3期4-7,41,共5页
Journal of Huanggang Normal University
关键词
泛函微分方程
平方可积性
有界性
functional differential equation
quadratic integrability
boundedness