【摘要】 研究了一类具有脉冲的二阶非线性时滞微分方程(r(t)x′(t))′-p(t)x′(t)+sum from i=1 to n qi(t)x(t-σ_i+f(t)=0,t≠t_k,x(t_k~+)-x(t_k)=a_kx(t_k),x′(t_k~+)-x′(t_k)=b_kx′(t_k),k∈Z~+的解的渐近性,并得到了一系列相关的充分条件.更多还原

【Abstract】 This paper studies the asymptotic behavior of solutions of the seond-order non- linear delay differential equations with impulses (r(t)x′(t))′-p(t)x′(t)+sum from i=1 to n qi(t)x(t-σ_i+f(t)=0,t≠t_k,x(t_k~+)-x(t_k)=a_kx(t_k),x′(t_k~+)-x′(t_k)=b_kx′(t_k),k∈Z~+ and some sufficient conditions are obtained.更多还原