若不等式
成立的一个充分不必要条件是
,则实数a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fcce37418c44803ef891729531cded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afeccf0358c02b53554a0f6d3dc33cbd.png)
更新时间:2023-10-01 07:57:14
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【知识点】 根据充分不必要条件求参数解读
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【推荐1】已知
,
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是
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填空题-单空题
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(0.85)
【推荐2】已知
:
,
:
,且
是
的充分而不必要条件,则
的取值范围为_______
![](https://img.xkw.com/dksih/QBM/2017/1/6/1619445101486080/1619445101871104/STEM/81257cb3951d4a248a4e8d24b45d58e1.png?resizew=16)
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