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author:

周燕 (周燕.) [1] | 林丽琼 (林丽琼.) [2] | 任立英 (任立英.) [3]

Abstract:

无穷小等价替换是计算极限一种常用且好用的方法,但要求替换项在极限点的某个邻域内没有零点,文章证明了函数在极限点的任意邻域都出现零点时,满足一定条件,等价替换仍可实施.另外利用极坐标计算二元函数极限时有诸多的限制,文章针对一类特殊函数给出了应用极坐标便于计算应用的若干结论.

Keyword:

无穷小 极坐标 极限 等价替换

Community:

  • [ 1 ] 福州大学数学与计算机科学学院

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Source :

大学数学

Year: 2021

Issue: 02

Volume: 37

Page: 108-113

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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