关于“取对数求导方法”的研究  

The Research on “the Logarithmic Derivative Method”

作　　者：房小栋[1] 王玲芝[1] 

机构地区：[1]天津现代职业技术学院思政与基础教学部,天津300350

出　　处：《洛阳师范学院学报》2015年第5期24-26,共3页Journal of Luoyang Normal University

摘　　要：本文主要针对取对数求导的方法展开讨论.当函数不为零时,取对数求导对定义域缩小后的函数求导数结果即为原来函数的导数,这样我们在用取对数求导法时,就不必有任何顾虑,只需把所给函数每个因子视为正的,取对数求导即可.In this paper , the logarithmic derivative method is discussed .When the function is not zero , we can get logarithm derivation from function which has narrowed domain of definition and the result is just the same as the derivation of the original function . Simply assume each factor of the function as positive and get derivation through logarithm .

关 键 词：定义域 取对数 导数 

分 类 号：O171[理学—数学]