It is also a sufficient condition for second order linear differential equation with varied coefficient to be integrable.
对于二阶变系数线性微分方程来说，这也是可积的一个充分条件。
Using position data to obtain velocity parameters of object through differential coefficient is a general method in range.
通过对定位数据求微分以获得目标的速度参数，是靶场估计目标运动参数的常用方法。
This paper establishes a delay differential inequality with varying coefficient and varying delay.
本文首先建立一个变系数变时滞微分不等式。
应用推荐