Comment the mathematical methods and theories in these courses by the view of whole situation,compare and analysis the special characteristic for studies,state the connections among them,describe and introduce simply the feature and the characteristic of these problems,such as the change rate of function;pr.

用整体观点对该类课程的基本数学方法和理论进行综合评述和总结,对其学科特征进行比较和分析,阐述他们之间的若干联系,简要介绍了分析类课程中函数变化率、微分、积分理论、不等式等问题的面貌和特点。

The variational rateof every population in SEIS epicemix model;

SEIS流行病模型中各类人群的指数变化率