名校
1 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca87295f36a2d30a1639592c4b5a7a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0389ca6c49a2af43452fe4cadce801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4198dc12226f85fae2348730c25ab6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
2 . 已知函数
是定义在
上的奇函数.
(1)求实数
的值;
(2)判断
在定义域上的单调性,并用单调性定义证明;
(3)
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cbc2ed4bad6431037602fc427e6756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5667bc1ea875422f618529aa5f254f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e9b1365d76a10c212db1c91c5f91f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
解题方法
3 . 已知函数
的零点是
,且
,函数
的零点是
,且
,当
时,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0ff7ac083b888d0055e49bf130a6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11de155ceee2401a41d3f61337179ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df79854c0ad67f1b29ba550474ed7c7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104ea0b930594d027e94236827f6c491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c8f633ac6b419b6e4ab359bd8be748.png)
A.![]() | B.![]() |
C.![]() | D.存在![]() ![]() |
您最近一年使用:0次
名校
解题方法
4 . 设集合
,
,
(1)若
,求
,
;
(2)若
中只有一个整数,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1aa2c6593b922adda24f698c682dd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7259cb8656ee25e0cf139c5ef44bfa.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9cf8dffa529bdb60c61af0d12c7e737.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e349af7d47125d7028ee57178e199da5.png)
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名校
5 . 已知集合
,若“
”是“
”的充要条件,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc0982d002a381b91be1f775a40d5ae.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8723077870d8ad10b44c2bb53e2b4124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc0982d002a381b91be1f775a40d5ae.png)
您最近一年使用:0次
名校
解题方法
6 . 对任意
,不等式
恒成立,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45256bc50846ff052fd5621be50972c.png)
A. ![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
7 . 函数
的单调递减区间为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c81ac87554fbb18458a072def247606.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 某企业2023年的电力消耗为
千瓦时,由于设备更新,该企业计划从今年(2024年)开始,每年比上一年的电力消耗减少
,则该企业当年的电力消耗不超过
千瓦时的最早的年份是(参考数据:
,
)( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb87b1f8c5360629d063192eadb8230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f7633f17ba15af342e69cbaa638dd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b58ebe6148d43fb701a23e039438c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8288e1d872c6b5872b84a32469ff9e76.png)
A.2031年 | B.2030年 | C.2029年 | D.2028年 |
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9 . 已知全集
,
,
,则
可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d679d7b50b4a434b2f3c950882550f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0371ee50d839798126e465309675ce59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2333f966f6ec29f0661f93d99b055cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5d1d736bf33cda2ec54a5229dd3b2d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8ee93f7771f73f0303642db5783b21.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1854fd8bf76e74f6414fc8c9a77a0216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8ee93f7771f73f0303642db5783b21.png)
您最近一年使用:0次