The general solution of a kind second order equation is given. 摘要给出一类二阶变系数线性微分方程的通解。
We discuss the stability of a kind of neutral delayed linear differential equation, and obtain the stability criterion of this equation. 摘要讨论了一类中立型线性微分方程的稳定性,得到其零点稳定的充分判别准则。