1 . 函数
在区间
上有3个零点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6b8482894110adeb1e35d4c6b853d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71163f419555f2ed76075c8ff659fbfc.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.已知![]() ![]() ![]() ![]() ![]() ![]() |
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名校
2 . 已知函数
,其中
,若实数
满足
时,
的最小值为
.
(1)求
的值及
的单调递减区间;
(2)若不等式
对任意
时恒成立,求实数
应满足的条件;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3065a4c005975c58c7933245a7ea4012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea6aa25a3efc37d236cad6da52fc1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af29275bc15b9386fd2a58d0842afb36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa4c3b76c3feb011d05b6b7b77b88f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2022-02-28更新
|
797次组卷
|
8卷引用:黑龙江省七台河市勃利县高级中学2023-2024学年高三上学期9月月考数学试题
名校
3 . 已知函数
,若存在实数
,满足
,且
,
,
,,则n的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12959f65e9db83c446c35d3261a33171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83590c4a7ea5636843dd4b60c67cb40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c245861d585da34512322102506f12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd8aca43265bd67a26d37ea1a44665e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
A.4 | B.5 | C.6 | D.7 |
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