1 . 已知函数
的定义域为(0,+
),若
在(0,+
)上为增函数,则称
为“一阶比增函数”;若
在(0,+
)上为增函数,则称
为”二阶比增函数”.我们把所有“一阶比增函数”组成的集合记为
1,所有“二阶比增函数”组成的集合记为
2.
(1)已知函数
,若
∈
1,求实数
的取值范围,并证明你的结论;
(2)已知0<a<b<c,
∈
1且
的部分函数值由下表给出:
求证:
;
(3)定义集合
,且存在常数k,使得任取x∈(0,+
),
<k},请问:是否存在常数M,使得任意的
∈
,任意的x∈(0,+
),有
<M成立?若存在,求出M的最小值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e82cc461b9607e08a8b31597f6d26df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b581dba9cddfa758eb3a030fcc9de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843a1dd73fb90053eeb8f5d014f9c0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)已知0<a<b<c,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![]() | ![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | t | 4 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0804b72b083963cfb022c1d3d45e758.png)
(3)定义集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/951068950ea1e02576e11df1d43de9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f5817ab7b88e9d8a83dd086ffdb3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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2 . 已知函数
.
(1)若
在区间
上单调递增,求
的取值范围;
(2)若
,函数
,且
在
上的最大值为
,证明:方程
在
上恰有两个不相等的实数根.
参考数据:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b6bf0c3f6c4e5f402f44efcfe5b5b2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91741080a27ded1282df77900c0dd2c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbdd2396683477aac90d9797fdb84de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954e13465f6307afde8295c0cc160891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55cfcbb5c5950e18a8452b38bb17036.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/861a1138518c15e9d326e5b53e728346.png)
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7日内更新
|
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|
2卷引用:河南省濮阳市2023-2024学年高二下学期期末学业质量监测数学试题
名校
3 . 已知函数
.
(1)当
时,求
的图象在
处的切线方程;
(2)若函数
存在单调递减区间,求实数a的取值范围;
(3)设
是函数
的两个极值点,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ce03991003cf95131016408f2d4ce1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d06e33d079ac1649ee5eea8f61de7cf.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fcad362a59670d52247deb8af650927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648d45539fbee959eabbf7a6c01f6982.png)
您最近一年使用:0次
解题方法
4 . 已知函数
,
,
.
(1)若函数
在
上单调递增,求
的取值范围;
(2)若关于
的方程
有两个实根
,
(i)求
的范围;
(ii)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff6838d84b68c6f0d3b93b196d9b08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4784338464ebd7b72876659bcb2df179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/020d756192f4dc7939f3b73891ced2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c34a0d539a1a149edfd5b6c2e3dfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ed1edfb1823ff324796448f20bd690.png)
您最近一年使用:0次
名校
解题方法
5 . 已知函数
.
(1)若
在
上单调递减,求
的取值范围;
(2)若
,求证:
;
(3)在(2)的条件下,若方程
两个不同的实数根分别为
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f427e20f209d8735282d61dfca28e30.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c5825adab1b87d016225a3776ca77e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a16c72a116078d0f5e4ace3038a045.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b534f3b4599d4c694aabe0ca83ef37.png)
(3)在(2)的条件下,若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9322bddf9b30eb23820778fec6ade0.png)
![](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/32360ab56775d28d59eff5dbb55b2901.png)
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2024-02-27更新
|
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2卷引用:河南省周口市项城市四校2024届高三上学期高考备考精英联赛调研数学试题
解题方法
6 . 已知函数
.
(1)若
时,
在其定义域内不是单调函数,求a的取值范围;
(2)若
,
时,函数
有两个极值点
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d6f91e36b865ea3f3b30244b2114b3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9683faee732f4eedf79bed4e1e8a3c6c.png)
您最近一年使用:0次
名校
解题方法
7 . 已知函数
.
(1)若
在
上单调递增,求实数
的取值范围;
(2)若
有两个极值点分别为
,
(
),当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd5390482e4ed10943c47fb132f2ac7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d8047f0a8bd0cf4e250cd0fe80093b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ec5d2d91935134a0eedd5d51e05212.png)
您最近一年使用:0次
2024-01-19更新
|
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2卷引用:河北省邢台市2024届高三上学期期末调研数学试题
名校
解题方法
8 . 已知定义在
上的函数
.
(1)若
为单调递增函数,求实数
的取值范围;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1381128be3fc384798399bb8ee5f6580.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f45f3d6fcf21f327056e03027ccd101.png)
您最近一年使用:0次
解题方法
9 . 已知函数
(
).(其中
是自然对数的底数)
(1)若对任意的
时,都有
,求实数a的取值范围;
(2)若
,求证:
.(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e18b87c04875f16c27a6f7923d0934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3c99ca3d73d87d3fdbef88c859dd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2873012d88521194d4265f22e62fd4f2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998874344388dd622c6b5a41676a438e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b7cfcc147916ae7eeb5d557fea945e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25522700e456c259978a6d762e818572.png)
您最近一年使用:0次
名校
解题方法
10 . 已知函数
.
(1)若函数
在区间
上单调递增,求实数
的取值范围;
(2)求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd05b00a4f9faecda35c4214890773a7.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
您最近一年使用:0次
2023-07-16更新
|
445次组卷
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5卷引用:福建省漳州市2022-2023学年高二下学期期末教学质量检测数学试题
福建省漳州市2022-2023学年高二下学期期末教学质量检测数学试题福建省福州教育学院附属中学2023-2024学年高二上学期期末考试数学试题(已下线)专题突破卷10 导数与不等式证明(已下线)模块一 专题3 导数(人教A)3广东省中山市2024届高三上学期第三次月考数学试题