【摘要】 研究了一阶时滞微分不等式 x′( t) +q( t) x( t-δ)≤ 0正解的最大存在区间 ,并应用于几类时滞微分方程解的零点距估计 ,获得了一系列新的更好的结果 .更多还原

【Abstract】 The maximum existence interval of positive solutions of first order delay differential inequality x′(t)+q(t)x(t-δ)≤0 is investigated. As applications, we establish some better estimates for the distance between adjacent zeroes of the solutions of several kind delay differential equations.更多还原