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 .
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
关键词
定义域
取对数
导数
domain of definition
logarithmic
derivation
