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116问答网 > 如果根号（A-1）²=1-A 那么A的取值范围是多少？

如果根号（A-1）²=1-A 那么A的取值范围是多少？

A：A=1B：A＜1C:A≥0D：A≤1

2025-03-15 07:13:03

推荐回答（5个）

回答1：

D：A≤1

根号（A-1）²=1-A
A-1<=0
A<=1

回答2：

D
根号（A-1）的平方其实就是取(A-1)的绝对值，而绝对值是永远大于等于0的，所以A应该是小于等于1

回答3：

说明1-A≥0
则A≤1
所以选D

回答4：

23
23
23212312312315645142156

回答5：

c

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