This article discusses some problems which should be paid attention to using equivalation infinite small and the L Hospital Theory.
本文对用等价无穷小代换与洛必达法则求函数的极限进行了探讨。
This article is to examine the marketing combination theory of small and medium-sized retail enterprises in the application of the system, which applied research.
本文主要是研究营销组合理论在中小零售企业的系统运用问题，属于应用研究。
应用推荐