1 . 已知函数
.
(1)讨论函数
在
上的零点个数;
(2)当
且
时,记
,探究
与1的大小关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81eeb610596766eb3d36bf33f603953.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499a8449e8bb253065463c23f3ff5860.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff537b9287dffb28e89bfc2bf5ed723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2a14d9c7f3d948525c2660db272223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
您最近一年使用:0次
2023-05-02更新
|
709次组卷
|
6卷引用:山西省吕梁市2023届高三三模数学试题(B卷)
2 . 已知函数
.
(1)求曲线
在
处的切线在x轴上的截距;
(2)当
时,证明:函数
在
上有两个不同的零点
,
,且当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57326a8edd0e0e53a31135427cc3c20c.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8291964ca555ad13802ceecb0d1e6449.png)
![](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/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/358be2a873f6ea85f98f5d1f807a75e8.png)
您最近一年使用:0次
2023-03-30更新
|
362次组卷
|
3卷引用:山西省吕梁市2023届高三二模数学试题
3 . 设函数
.
(1)讨论
的单调性;
(2)若当
时,不等式
恒成立,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3fc3247f7f3fc5151a87e5ec43d3c1.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df5bdcd155ae13c7dc1a7dca2b701e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d94f56349a068e6fc873630384554c58.png)
您最近一年使用:0次
2023-03-27更新
|
1788次组卷
|
3卷引用:山西省吕梁市兴县友兰中学2024届高三上学期12月月考数学试题
解题方法
4 . 已知函数
,
.
(1)求
的极值;
(2)令
,若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e536d094cddcd0c8ac4cd4c01f41c136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824555e1cafdc9d95a203c5f1f49e735.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4633de9335d15d7685bdecb007a3678c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a74b52ecccbf8c007dd60560ea1861.png)
您最近一年使用:0次
2023-02-16更新
|
390次组卷
|
3卷引用:山西省吕梁市2022-2023学年高二上学期期末数学试题
解题方法
5 . 已知
.
(1)求证:
恒成立;
(2)令
,讨论
在
上的极值点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6064ea5c9236e2ccbd91de0368c67a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ba34ec42d35224b021c44eecacbcb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e15c2171c1be9ec394494ad822a048d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1e76aaf12e83bd85df89b42ab2eef5.png)
您最近一年使用:0次
2023-01-10更新
|
375次组卷
|
2卷引用:山西省吕梁市2023届高三上学期期末数学试题
6 . 已知函数
.证明:
(1)
在区间
内存在唯一极大值点;
(2)
有且仅有唯一零点.(参考数据:
.
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad11569b4002eccf84cb89e7fa554dd.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01dc2d99655cf7598837cb0886166ed.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbc532702246c7d04cf9e6d352d0254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec3a290516aec209fde439704207fd0.png)
您最近一年使用:0次
7 . 已知函数
.
(1)求
的单调区间;
(2)若
有两个不同的零点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457c6fbb4596e9dd6c7739aca53a7a6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a415767156945ea8ada9ed3756019fc.png)
您最近一年使用:0次
2022-08-26更新
|
964次组卷
|
7卷引用:山西省吕梁市交口县第一中学2022-2023学年高三第一次联考数学试题
名校
8 . 已知函数
,若关于
的不等式
恒成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a8230a919190f48d9df03559e5656a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-07-20更新
|
1218次组卷
|
2卷引用:山西省吕梁市孝义市2022-2023学年高二上学期期末数学试题
解题方法
9 . 已知函数
.
(1)若
,求证:
;
(2)若
对任意正数x恒成立,求a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafc9e1e7cffe61736ca5ce7de51ee5d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3588b9426a37da3eb58d2e6a9a39ec.png)
您最近一年使用:0次
10 . 已知函数
.
(1)当
时,讨论函数
的单调性;
(2)若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4655ff45ef0bc8fb2904804790b62780.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48adb8a59b5c02fad5eada1b35171cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
您最近一年使用:0次