一阶中立混合型微分方程振动的四个充要条件

Four Necessary and Sufficient Conditions for Oscillations of First Order Mixed Neutral Equation

本文研究中立混合型微分方程 [x(t)tpx(t-τ)]＇+q_1x(t-α_1)+q_2x(t+σ_2)=O (1)的振动性,这里p,q_1,q_2,τ,σ_1,σ_2都是正实数。获得了方程(1)振动的四个明确的充要条件.

Consider the neutral differential equation with mixed arguments, we obtained four explicit necessary and sufficient conditions for oscillations of equation (1) , our results are more effective and practical comparing with the literature in [2].