摘要
给出了四阶微分方程(r(t) x(t) ) ″+f(t,x(g(t) ) ) =0 t t0的所有解 (有界解 )振动的一些充分条件和必要条件 .
In this paper,we are concerned with the fourth order differential equation (r(t)(t)) ″+f(t,x(g(t)))=0 tt 0 . Some necessary and sufficient conditions for oscillation of (1) are obtained.
出处
《延安大学学报（自然科学版）》
2001年第2期17-20,共4页
Journal of Yan'an University：Natural Science Edition
关键词
振动性
超(次)线性
强超(强次)线性
oscillation
superlinear(sublinear)
strongly superlinear(strongly sublinear)
