【摘要】 研究一阶超线性时滞微分方程x′(t)+p(t)[x(t-r)]~α=0(α>1)解的振动性及非振动性,获得了保证其所有解振动的“almost sharp”准则,并应用所得结果于混合型时滞微分方程得到一族振动准则。更多还原

【Abstract】 In this paper, we consider the oscillation of solutions for the first order superlin-ear delay differential equations x’(t) + p(t)[x(t -r)]a = 0 (a > 1), and obtain some "almost sharp" oscillation criteria. In the final, by applying the obtained results in this paper, we also obtain some oscillation conditions for the mixed type delay differential equations更多还原