1 . 已知函数
.
(1)求
的极值;
(2)若方程
有两个不相等的实数根,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7dd149d814c119803b96b22073bf6f3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbad4382b31ac0dadf89c137348364ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知函数
,设
,若
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45b7995cefea9dafc890b6502d5925b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987d98abed0935e2645eeafad8491f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba934874cc9f2ab272fdff67ea23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914b0d2d6c79ad386cb837b10fefb861.png)
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解题方法
3 . 已知定义在
上的函数
,满足
,当
时,
,若方程
在区间
内有实数解,则实数
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1d7badee63ca625e18667e8e21d89f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71bb7883ea87e6275472dbe14ee62357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea8d566149e89b0bdc3f155c66c9c208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c708316a48c041bdbd66f4f0e43ad9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-07-05更新
|
595次组卷
|
2卷引用:河北省唐山市冀东名校2022-2023学年高二下学期期末数学试题
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4 . 已知函数
,若
有三个零点,则实数m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6488c8a9e12e2105fc280ad6bffbeb93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b946a8ec829a341aa6806a3eb0b9ff.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-18更新
|
539次组卷
|
4卷引用:河北省唐山市开滦第一中学2023届高三下学期第一次月考数学试题
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5 . 对于定义域为D的函数
,若存在区间
使得
同时满足:①
在
上是单调函数;②当
的定义域为
时,
的值域也为
,则称区间
为该函数的一个“和谐区间”,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d3d92b8612c91cb6b88c34ea153e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
A.函数![]() |
B.函数![]() ![]() |
C.若定义在![]() ![]() ![]() |
D.若函数![]() ![]() |
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2023-02-17更新
|
1879次组卷
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7卷引用:河北省唐山市曹妃甸区曹妃甸新城实验学校(北京景山学校曹妃甸分校)2022-2023学年高二下学期期末数学试题
名校
6 . 已知函数
是定义在R上的偶函数,对任意的x都有
,且
,对任意的
,
,且
时,
恒成立,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5276fa232ce71e75a1d8412f6c5404dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d55fdc69729b3917cc33529c9586235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14209cf256d31b8ed688910ce84364f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a57d6d7b74ae630e6ce3b43afe6060.png)
A.3的一个周期 | B.![]() |
C.![]() ![]() | D.方程![]() ![]() |
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2021-03-18更新
|
973次组卷
|
2卷引用:河北省唐山市第五中学2022届高三下学期开学摸底数学试题
9-10高二下·河北石家庄·期末
名校
解题方法
7 . 设方程
的两根为
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680facefd48fac2852fe1717127305d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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