解题方法
1 . 已知函数
.
(1)证明:当
时,
恒成立;
(2)首项为
的数列
满足:当
时,有
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a930f36a63e67ba5ce2ab3b8320c7eb0.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9518d59e737e3ac698165c5ec17ba636.png)
(2)首项为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbaae3509b29f0bc77e8687702b7484d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b242016eaeac01ac3d573fa1932a3910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4138f481d09d1d1fc962d5a90245a7.png)
您最近一年使用:0次
名校
2 . 已知函数
(e为自然对数的底数)有两个零点.
(1)若
,求
在
处的切线方程;
(2)若
的两个零点分别为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b6e76de4cbccbface43c0069ccd1cfe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fbb6770e773fcb8318616fbd23e25c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8210703fae32cb9d752f24dc69be7a3.png)
您最近一年使用:0次
2021-10-06更新
|
1438次组卷
|
7卷引用:江西省萍乡市第二中学2023届高三上学期10月份质量检测数学(理)试题
名校
3 . 已知函数
,其中
为常数.
(1)讨论函数
的单调性;
(2)若
有两个相异零点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3890541e03e977afe39975143b2794ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae74c724114bfeff024dd7b79f5edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a63c9c4981054fdf544a9d4168684b.png)
您最近一年使用:0次
2019-03-26更新
|
1626次组卷
|
3卷引用:【市级联考】江西省萍乡市2019届高三一模考试数学(理)试题