一般的一阶中立混合型微分方程振动的充要条件

Necessary and Sufficient Condition for Oscillations of the First Order Generality Neutral Mixed Type Equation

本文研究一般的中立混合型方程:的振动性.这里所有p_i,q_k,r_j都是正常数.我们用G.Ldas等人的方法建立了上述方程振动的充要条件是其特证方程无实根.

In this paper we conisder oscillations of the neutral mixed differential equation of the form [x(t)where all pi,qk,r; are positive real numbers,Weestablished a necessary and sufficient condition for oscillations of the Eq. (1) by G. Ladas used method.