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高阶无穷大的概念是什么
更新时间: 2020-09-27 00:00:00  

比如两个变量a和b,a,b同时趋向无穷大时,如果a变化的速度更快,则a是b的更高阶无穷大。如:比较x²和x当x趋于无穷大时显然x²更快一些,所以x²是x的更高阶无穷大,常用的方法一般用比a和b同时趋于无穷大时,a为更高阶无穷大。

关键词: 无穷大 概念 什么

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