real number既問題
回答 (2)
2008-03-09 7:27 pm
✔ 最佳答案
In fact, they are not number.So, there are not real number.
But in the extended real line, both infinity are included as objects at the end on the line of both sides
2008-03-10 5:48 am
The reader should note once again that the symbol +無限 is not mean to denote the name of a specific number. It is a historical term which has remained in the language.
Handbook of Applicable Mathematics, Vol. IV: Analysis p.9-10
Handbook of Applicable Mathematics, Vol. IV: Analysis p.9-10
收錄日期: 2021-04-28 14:16:37
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080309000051KK00676