讨论了一类具有振动系数的超前型泛函微分方程解的振动性,得到方程(1.1)式振动的“sharp”条件,从而改进了现有文献的相关结论,并通过例子验证所给结果的有效性.
This paper discusses oscillations of pre-kind function differential equation with oscillating coefficients, and obtains sharp conditions of equation(1.1). Then it improves some conclusions of existing literature. The effectiveness is proved by an example.