名校
1 . 下列四个命题,其中真命题的个数是( )
(1)若
,则
或
;
(2)若
,则
;
(3)已知a,b是实数,若
,则
;
(4)已知a是实数,不等式
的解是
;
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b83a660527359758db64e6566466293.png)
(3)已知a,b是实数,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e25e52343ede4373bc599876cce2fb.png)
(4)已知a是实数,不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73e3e3121bb9b2bd601bb8f8701c5b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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2 . 已知定义在
上的函数
.
(1)若
,求方程
的解;
(2)若
,试判断
在
上的单调性,并用单调性的定义证明;
(3)若
,集合
,且集合
恰有16个子集,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6c2df20a2c22f0fb59b477d63dea43.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0369099d128586f54e7d566a5cdc5686.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2377ec6f0f933f4d0a743d0a5b6f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ac15fd4aa84b5ee13002d7ee04a96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
3 . 已知
,写出一个满足条件的集合
,补充在下列问题中的横线上,并求出问题的解.
问题:已知
,且
,
是小于
的正偶数}___________.求
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446f653af671bafe76711759295bd6e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b6abc4c1d0c2c5b56573ea2d37834d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
问题:已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa235ad2e3bba941cab00ab3954607e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee70683451816fbc7e9298e384a99a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed769bf068e95791bffdd1fa9961a273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d180c600efe0e9df9fab937492eb817.png)
您最近一年使用:0次
2021-11-27更新
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201次组卷
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3卷引用:江苏省宿迁市沭阳县2021-2022学年高一上学期期中数学试题
江苏省宿迁市沭阳县2021-2022学年高一上学期期中数学试题(已下线)解密01集合(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(全国通用)苏教版(2019) 必修第一册 突围者 第1章 第三节 交集、并集