解题方法
1 . 已知
,且
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e902df30205209ae27905dc528179bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8598fa4c2e81be2df797b34bb9a131f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fc838e1477179b36ca7481ee2cc1e8.png)
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2 . 定义:记
为
这
个实数中的最小值,记
为
这
个实数中的最大值,例如:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8774803290fd7e2b8e5aaded3878e87.png)
,
.
(1)若
,求
、
的值;
(2)已知
,求
的最小值;
(3)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956a34a1f40a8e5ca429db56154a1302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5492f8c6f6ffc3412d316727333a940a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8774803290fd7e2b8e5aaded3878e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2b3b0ca12bc39549b0c3843c1dee61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a6be5ce078006dc2e59d419359e171f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b191787f1c8f50f09fcfdd4f54ad58a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54b6a060d6c51a328341df76013bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e1a1611f320c0f358df77aaae3f942.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b6487aab21104fcbe96f0ed5675c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db2887bd776156165be9e747cf43b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
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解题方法
3 . 已知
,且
.则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a66b19a1bc76f5d1b9a9c43b1656e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222177cbe01e50b822008f20f82af9fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7266b2ef457b8ddeee3fa2cc24022e.png)
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4 . 已知
,
,且
,则实数
的值分别是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ad010181a00b2ebe0d3597ac83a500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d0670960fcc6e2b9dfdd3d72175270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0f07c1bbe6b2189f3041d9dbbc440a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
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5 . 若集合
满足
,则集合
的个数有_______ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3763c1a8a925e4bc9ad7d8e66e6e31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2020-03-08更新
|
742次组卷
|
4卷引用:上海市莘庄中学2016-2017学年高一上学期期中数学试题
上海市莘庄中学2016-2017学年高一上学期期中数学试题衔接点14 集合间的基本关系-2020年【衔接教材·暑假作业】初高中衔接数学(新人教版)衔接点14 集合间的基本关系-2020年【衔接教材·暑假作业】初高中衔接数学(人教版)(已下线)1.2 集合间的关系(精炼)-2020-2021学年一隅三反系列之高一数学新教材必修第一册(人教版A版)
6 . 已知全集
,设集合
,
.
(1)若
,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d2f156e89592d11f03dbb4437d502c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9b0819699ff078e097b303556718df.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56331cb0282998df87f0ecbbc34681f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2901118223e76eb68a7b7de185c877d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
7 . 不等式
有多种解法,其中有一种方法如下,在同一直角坐标系中作出
和
的图象,然后根据图象进行求解,请类比此方法求解以下问题:设
,若对任意
,都有
成立,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51c8ee65c143cd3d71beffdd1c16878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73801c38ac23a0776ec3f627c7a85fe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b15a2bdd7719b55bdfaf381de73d673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35bdda55297a096a78f2926c8bb0fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee2507f8ebdad4cff409a7c8280fde8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
您最近一年使用:0次
2020-03-08更新
|
173次组卷
|
2卷引用:上海市莘庄中学2016-2017学年高一上学期期中数学试题
解题方法
8 . 对任意实数
,不等式
恒成立,则实数
的取值范围为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54d90eedcda3db1d88f2e83b6112b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
9 . 集合
,且
,则实数
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f20d6c93cab89575137f84ed402f475f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a2410ce34b36954ed4923e600d42f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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10 . 命题“若
,则
”为__________ 命题(填“真”或“假”).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f7c54faca6eac8af5309942062058d.png)
您最近一年使用:0次
2020-03-08更新
|
356次组卷
|
3卷引用:上海市莘庄中学2016-2017学年高一上学期期中数学试题