名校
解题方法
1 . 已知函数
.
(1)判断
的单调性并用定义证明;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac848329f74c7dc6880bc700a238324.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f528b6d1e06da8401f27230afae1c416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-01-22更新
|
761次组卷
|
4卷引用:福建省厦门市2020-2021学年高一上学期期末考试数学试题
名校
2 . 设函数
是定义在
上的函数,若存在
,使得
在
上单调递增,在
上单调递减,则称
为
上的单峰函数,
称为峰点,
称为含峰区间.
(1)判断下列函数中,哪些是
上的单峰函数?若是,指出峰点;若不是,说出原因:
,
,
,
;
(2)若函数
是区间
上的单峰函数,证明:对任意的
,
,若
,则
为含峰区间;若
,则
为含峰区间.
(3)若函数
是区间
上的单峰函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee49cd415b686374189f90102d23ef7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b23e032f76e2e0956198624f26c1d17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e27a3b446b1cc26dd888ec3972d8c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
(1)判断下列函数中,哪些是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89a87d019e9a558607c6e3bc3ca1640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dbc09781887e0604f1a04c705ea6068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c472c8dafe09b2d605521ed83af6a39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829ecc7b81ed083730f3445ff8f2577c.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9831f7677f1e05bdbce7edbdba4e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f348a0b693a24c92a2bebf7fa0dba2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bacfb2ce7a563ef6012537e0dcb80b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ee7abd882ba99660bca68ebf544cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3578b4efca76ca9f2a3d1d96508064bb.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e59e18ad23b6caff89caf98383bd35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa549dc0cca6a45acdcf5976f747fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
3 . 若函数
在定义域内的某个区间
上是增函数,而
在区间
上是减函数,则称函数
在区间
上是“弱增函数”.
(1)分别判断
,
在区间
上是否是“弱增函数”(不必证明);
(2)若函数
(
、
是常数)在区间
上是“弱增函数”,求
、
应满足的条件;
(3)已知
(
是常数且
),若存在区间
使得
在区间
上是“弱增函数”,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e82cc461b9607e08a8b31597f6d26df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
(1)分别判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09723a50d2bce12318e1b9b2c5c02621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccd78102e7372f800abeb4eb0e2f99a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154186900500104502219afe07839158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445417d66161e8f8cbe9fb2166de74fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/659340c5560a41e799f1ee06aa58a01c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
名校
解题方法
4 . 已知
是定义在
上的奇函数.
(1)求
的值;
(2)判断
在
上的单调性,并用定义证明;
(3)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6f9b8202451375dddc577c0964d38e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f7d061ccc00e8f410fc840fe7cc57c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-10-22更新
|
4737次组卷
|
6卷引用:河南省新乡市安阳市鹤壁市顶尖名校2020-2021学年高三10月联考数学理科试题
名校
解题方法
5 . 已知函数
.
(1)用定义证明
在区间
上是减函数;
(2)若不等式
对任意的
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5effb3053cf609f59178641cd48167.png)
(1)用定义证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55762dbc5015e3c5f7cfd894c6dea023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c22892cd526d878e3a022e4451f948c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-04-30更新
|
260次组卷
|
2卷引用:安徽省六安市第一中学2019-2020学年高一上学期第一次段考数学试题
名校
解题方法
6 . 设函数
,其中a为常数,
(1)若a=1,用定义法证明函数f(x)在[0,3]上的单调性,并求f(x)在[0,3]上的最大值;
(2)若函数f(x)在区间(0,+∞)上是单调递减函数,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a10e85afd77dce47eb8db0fe7b43af3.png)
(1)若a=1,用定义法证明函数f(x)在[0,3]上的单调性,并求f(x)在[0,3]上的最大值;
(2)若函数f(x)在区间(0,+∞)上是单调递减函数,求a的取值范围.
您最近一年使用:0次
名校
7 . 若函数
在定义域内的某个区间
上是增函数,而
在区间
上是减函数,则称函数
在区间
上是“弱增函数”.
(1)分别判断
,
在区间
上是否是“弱增函数”(不必证明);
(2)若函数
(
、
是常数)在区间
上是“弱增函数”,求
、
应满足的条件;
(3)已知
(
是常数且
),若存在区间
使得
在区间
上是“弱增函数”,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e82cc461b9607e08a8b31597f6d26df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
(1)分别判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d45e9bb438a011f890a8827795aad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccd78102e7372f800abeb4eb0e2f99a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154186900500104502219afe07839158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445417d66161e8f8cbe9fb2166de74fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a29f7f6294171b824722185447384b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
名校
解题方法
8 . 已知函数
(
).
(1)若
是奇函数,求实数a的值;
(2)判断
的单调性,并用单调性的定义证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd492d001a460384ca5c5ad7211561f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
解题方法
9 . 已知函数
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8679efcfb7e951bc73368ca1b49a77.png)
(1)若a=4,判断函数f(x)在定义域上的单调性,并利用单调性定义证明你的结论.
(2)若函数
在区间
上单调递减,写出a的取值范围(无需证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8679efcfb7e951bc73368ca1b49a77.png)
(1)若a=4,判断函数f(x)在定义域上的单调性,并利用单调性定义证明你的结论.
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b5e402f725a71c3305bf3e72f72ded.png)
您最近一年使用:0次
2020-10-23更新
|
129次组卷
|
2卷引用:浙江省金华市东阳中学2020-2021学年高一上学期10月阶段考试数学试题
名校
解题方法
10 . 已知函数
.
(1)用定义证明函数
在R上是减函数;
(2)探究是否存在实数a,使得函数
为奇函数?若存在,求出a的值;若不存在,请说明理由;
(3)若
,解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe01922147e7a0b3948344bcb2828f0.png)
(1)用定义证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)探究是否存在实数a,使得函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a38f9436fa939f0c482a2aa67cfdde.png)
您最近一年使用:0次
2020-02-13更新
|
377次组卷
|
2卷引用:河北省石家庄市第一中学2019-2020学年高一上学期期末数学试题