2023·全国·模拟预测
1 . 已知函数
,若函数
有三个不同的零点,则实数a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a478b3165317a00a27b571731aaee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00210f79b04a8f6bc1922433d00bc89a.png)
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2 . 已知函数
,若方程
有两个不相等的实数根,则实数
的取值可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca14e66b3b7c302ff89bf94cf2d3b651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f327b3400dffdb3d2c6919c923e0c4d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.1 | C.2 | D.3 |
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3 . 已知函数
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7653753e171cf1205d94618b5030018.png)
A.![]() |
B.函数![]() ![]() |
C.函数![]() ![]() |
D.设![]() ![]() ![]() ![]() ![]() ![]() |
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4 . 设
,函数
若
与
恰有三个公共点,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f5a6a8d406149c8cfc3bd6feb7df755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/739ea5df715a6f9b574d78a1ddd43e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1d8d5cea065075fe50706abe3ae802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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5 . 已知函数
,则以下结论正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0804c694b92d236499b316531fb236b1.png)
A.函数![]() |
B.![]() |
C.若![]() ![]() ![]() |
D.若关于![]() ![]() ![]() |
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2023-11-17更新
|
535次组卷
|
3卷引用:浙江省“衢温5+1”联盟2023-2024学年高一上学期期中联考数学试题
名校
解题方法
6 . 已知函数
,若关于
的不等式
恰有两个整数解,则实数
的取值范围是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a9c535489ec691a77f1dbc1049a175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c78e48712bd092265b95ddb945b3d51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 已知函数
,若方程
恰有6个不相等的实数根,则实数
的值可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc616221da740de2d4b6931426aaf35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee3f5e061231248191711acd7cb261c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 若
,
,
,其中
表示
,
,
中的最大者,
表示
,
,
中的最小者,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f43d7abf405a763283ddf9d189772e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd82d9553e7a967e84e5f4e69c53bb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08bd1826be87fdc5a6bdd7232c5bade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47020bf0686a8cca3bfe53f39a46c461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12daf4295b9e946a1dcfca1264635422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.函数![]() |
B.当![]() ![]() |
C.不等式![]() ![]() |
D.当![]() ![]() |
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9 . 已知函数
和
有相同的最小值,(e为自然对数的底数,且
)
(1)求m;
(2)证明:存在直线
与函数
,
恰好共有三个不同的交点;
(3)若(2)中三个交点的横坐标分别为
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0166bbd15fa298c0d6a90a639108f4e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6db457ee2d041b542c3eeff31d94cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11204e2fb6e560bf7a4ca26eaebfc526.png)
(1)求m;
(2)证明:存在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af79f45b5880c72a349500da9d8e118d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
(3)若(2)中三个交点的横坐标分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c06ceee2b1e227de025476eee95672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5b965b3f27889e139013aa8c8f8fe3.png)
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2023-11-10更新
|
363次组卷
|
4卷引用:福建省厦门第一中学2023-2024学年高一上学期期中考试数学试题
解题方法
10 . 已知对任意两个实数
,定义
,设函数
,设函数
,若存在
使得
成立,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6a528c61386d44247a5ca023cc5ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493228f84b1e3812548d6c02fabc47e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac43a5ce1e970ef25362b120e880ea90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a639e2581cb87851f70eeaad81175692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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