含阻尼项的二阶半线性微分方程的振动性

Preparation and Stability of Polyhalite(Sylvite) Powder

利用广义变分原理,Riccati-变换,函数求导以及函数的单调性,对一类带有阻尼项的二阶半线性微分方程解的振动性进行研究,得出了一些新的成果,从而改进和推广了最近的一些论文文献.

In this paper, using the generalized variational principle, Riccati- transformation,and the monotonicity of the functions,we study the oscillation of a class of second order half-lineardifferential equations with damping term,and obtain some new results,with improve and generalizes some recent literatures.