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Author:
Journal / Book Title:
Year:
Volume:
Issue:
wen da wu li shu
Author(s):
LIU Yudong
Pages:
19
-
20
Year:
2009
Issue:
Z2
Journal:
School Journal of Mathematics
Keyword:
无理数
;
有理数
;
无限小数
;
循环小数
;
实数
;
开方
;
联系与区别
;
数轴
;
定义
;
错误
;
Abstract:
<正>问:无理数与有理数有何联系与区别?答:有理数和无理数统称为实数,它们的主要区别在于:无理数是无限不循环小数,而有理数是有限小数或无限循环小数。问:无理数是无限小数,是不是无限小数就是无理数呢?
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