1 . 已知不等式
对任意的正整数k成立,则实数x的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac99d58586b159865720651907ea3bc7.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 已知函数
为奇函数,且当
时,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
________ ;当
时,
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b1958fec0bf13ad1055c2afbdacb46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538193a4717d564c01145e82314c2d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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3 . 已知函数
(其中
),
,且函数
的两个极值点为
.设
,
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf1343687b262e4a9054f725614033e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3a8a585faccd553cc19ec23da139fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3f51410d969f9fb41a595a028a6f06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0acf57d705176997a4ebf6d17ebf314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef376ee549fc8408605db9cb3ecc1284.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2020-03-19更新
|
147次组卷
|
2卷引用:浙江省宁波市北仑中学2020-2021学年高二下学期期中数学试题
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4 . 已知
,函数
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0e9d1ad9561d693958756ee8398218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bd0587f5d6a3b5db9e4a93e0dbc0ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ea3875b29075511d0abcf9c7a9c0c6.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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2020-02-17更新
|
482次组卷
|
6卷引用:浙江省杭州市第二中学2018-2019学年高一上学期期中数学试题
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5 . 设二次函数
,若函数
与函数
有相同的最小值,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b276e8fd2f9ef31eb7732e65f72ecfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d227791735377cb0c5644bd895fe4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.(-∞,0]∪[2,+∞) | B.(-∞,0] |
C.(-∞,2] | D.[2,+∞) |
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6 . 给出定义:若
(其中
为整数),则
叫做离实数
最近的整数,记作
,即
.设函数
,二次函数
,若函数
与
的图象有且只有一个公共点,则
的取值不可能 是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b82ec65b678aef2b8ae9f2b143d0c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda2bc2e6a5eaf4fa5ff901985dd0e53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25a4df83034c4d71df9ee060c7b32a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9165a1ad3f07b4c3285a90f2e0c01d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba39eea466242abb659ede4644623a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 已知函数
.
(1)求证:函数
的图象与
轴恒有公共点;
(2)当
时,求函数
的定义域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b222c964b32e9d712760d552d8b9d6.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a94d679c5a3906f04fe473e622331f7.png)
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2019-12-15更新
|
222次组卷
|
2卷引用:浙江省绍兴市诸暨中学2019-2020学年高一(平行班)上学期期中数学试题
12-13高二下·江苏南通·期中
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8 . 若二次函数f(x)的图象关于x=2对称,且f(a)≤f(0)<f(1),则实数a的取值范围是_____ .
您最近一年使用:0次
2019-12-15更新
|
520次组卷
|
5卷引用:浙江省杭州市高级中学2018-2019学年高一上学期期中数学试题
浙江省杭州市高级中学2018-2019学年高一上学期期中数学试题(已下线)2012-2013学年江苏省启东中学高二下学期期中考试文科数学试卷北京市第四中学2019-2020学年高一上学期期中数学试题(已下线)北京市第四中学2021-2022学年高一上学期期中数学测试题北京市大兴区2020~2021学年高一上学期期末检测数学试题
9 . 已知三个二次函数为
,若它们对应的零点记作
,则当
且
时,必有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/670b85b13e5cd7b19f67f33153433165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2243513b880087c89c0aa4f662a4af26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2227c388ff1295daf4e49846f8d920a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f56da772fa1ca40ce211c3e2aec83d.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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10 . 设函数
,函数
,若存在
,使得
与
同时成立,则实数
的取值范围是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e4604af6655efec2e5274c23f46bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3477306c08343ecd94a28326a165fb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92755ed40510a358dcb77392749fd792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6bfaaac40689ea19291d831097c2b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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