摘要
在本文中,我们利用微分不等式理论研究下列奇摄动三阶RFDE:εy′″(t)=f(t,y(t),y(t-τ),y′(t-τ),y″(t),ε),t∈(0,1)y(t)=θ(t),t∈[-τ,0],y′(0)=θ′(0),y′(1)=A{的边值问题,证明了解的存在性,并给出了解的有效估计式.
In this paper, using the theory of inequalities, we study the BVP for singularly perturbed three order RFDE: εy′″(t)=f(t,y(t),y(t-τ),y′(t),y′(t-τ),y″(t),ε), t∈(0,1) y(t)=θ(t),t∈,y′(0)=θ′(0),y′(1)=A we prove the sxistence of the solution, and give a valued estmation of the solution.
关键词
奇摄动
边值问题
泛函微分方程
时滞微分方程
singular perturbation\ boundary value problem\ differential inequality