1 . 已知函数
的定义域为
,给定两集合
及![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
,则集合
的元素个数是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d153bb2b39272822ea331c50e2f0601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933093b52cca887f597cbe22a5467b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d953209a089d9fe8481b130e232ea0ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c1a68553a6aec7d6697cd9c555849b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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名校
2 . 若不等式
有解,则a的取值范围是____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf96a6fb5110f5c9af449563638f2df.png)
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3 . 已知集合
,记点集A,B的面积分别为
和
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9b66bb58244fe482d79af8b5674f6d.png)
__________
.(用>,<,=填空)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9529c1fbff54c1cbebe59c8176cb900e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9b66bb58244fe482d79af8b5674f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5c2684bc262c17a0ce18b9b0d2cf76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9b66bb58244fe482d79af8b5674f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5c2684bc262c17a0ce18b9b0d2cf76.png)
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名校
解题方法
4 . 已知
且
,则
的最小值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73254f32b6da29ecc32df2e9f87a4c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0dacc400d55a1a447d426d7a2312f3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa8d7631599edcb60cddcae1d4b7a50.png)
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2022-07-10更新
|
219次组卷
|
3卷引用:浙江省2017年4月普通高中学业水平考试数学试题
5 . 关于x的不等式|x﹣6|+|x﹣3|≥k的解集为R,则实数k的取值范围是 ________ .
您最近一年使用:0次
2021-11-14更新
|
124次组卷
|
2卷引用:上海市普陀区同济大学第二附属中学2020-2021学年高一上学期期中数学试题
名校
6 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7de9ae5e7f20f9b0c6088205defc60.png)
_______
(填入等号或者不等式)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7de9ae5e7f20f9b0c6088205defc60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480cb64dc2434fbcbe338e7b87b92991.png)
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7 . 已知
,
,
,则
的最大值是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5faa5fdcd94e4dc99906d78a198f2049.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75eaf97713f43e771a3f9603c19ee24d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258dbe016982a678fa64b423907b4386.png)
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8 . 不等式
的解集为______ ;若不等式
恒成立,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da746407f695d7770503f444a4f3de1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e5da3a27e9ddefa2a9361a0724b7b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
9 . 若实数
,
满足
,则
的最小值是______ ,此时![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113986d9507fc5015e71989831c128b.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2417a91dbfd17bdca40186d804db06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86db2dcc105756a0efd60623dfc4e00c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113986d9507fc5015e71989831c128b.png)
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2020高一·上海·专题练习
解题方法
10 . 下列四个不等式:
①logx10+lg x≥2(x>1);
②|a-b|<|a|+|b|;
③
≥2(ab≠0);
④|x-1|+|x-2|≥1.
其中恒成立的是________ (填序号).
①logx10+lg x≥2(x>1);
②|a-b|<|a|+|b|;
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc1b46208c835b55240261fefba8fe4.png)
④|x-1|+|x-2|≥1.
其中恒成立的是
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