设关于x的不等式
的解集为A,不等式
的解集为B.
(1)求集合A,B;
(2)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d57674f36bf5c1f8098d80be12a310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a0ab4bf53b653678fd56c08c6f3942.png)
(1)求集合A,B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
更新时间:2023-11-02 06:43:40
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解题方法
【推荐1】已知集合
.
(1)当
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(2)若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6545b1559ad80efef18abd199d5d8c5c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7bf74e4eb8ca4fa2829e4576e4023f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67942a923fbfb7b997160b13f1fba776.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca18647bd19f05c6ba7ecfa9921c4280.png)
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【推荐2】已知定义在区间
上的函数
.
(1)求不等式
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(2)设函数
,
,若对任意的
,总存在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c6fa8b04f872c6d73e11b4ca499035.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee61811313868a7b4ec3ffd7b538a3dc.png)
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恒成立,求实数m的取值范围.
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(2)若数列
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【推荐2】已知命题
;命题
,若
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解答题-问答题
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适中
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名校
解题方法
【推荐1】已知集合
,其中
.
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(2)若
,求实数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34f6e7e894d870f0389593e0a2866069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)求集合A;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】设函数
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(1)求不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ba717a12518ce3018ccc2b86a73176.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665dc334a37e61c356b636604eb0f8c3.png)
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【推荐3】设实数x,y,z满足
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338ac09ffd9addc3dadf363152c3e39d.png)
(1)证明:
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(2)若
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