解题方法
1 . 设函数
,曲线
在点
处的切线方程为
.
(1)求
的值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a460de4b64a5154fca70b4e1ec8ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e154ef2a77f2ac3dcc1ff6df5ab012.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91100d6b3b151cc6ddfe60f106ec877.png)
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2024高三·全国·专题练习
解题方法
2 . 已知函数
.
(1)证明:
,总有
成立;
(2)设
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b1d328ccb23f0cb0d005eb100b3da4.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f8e43c171c92d250fbb74fa14f1a30.png)
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2024高三·全国·专题练习
解题方法
3 . 已知函数
.
(1)证明:当
时,
;
(2)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb89f876ec063673730aa225074b273.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576a9bd59c45f48818ef16d33f71bb91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfdecc7f8089cb23c20d0a93ee1b601.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09881de0dc186bbcd1e60eb00159ee97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76f5ea1a1281631da9f5c48afe23377.png)
您最近一年使用:0次
2024高三·全国·专题练习
解题方法
4 . 已知函数
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d27f6efcdd9a1a9b7edeff8850c3ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb1223c9c15e59a3366823f0f0ad5f5.png)
您最近一年使用:0次
2024高三·全国·专题练习
5 . 已知函数
,当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5469fe2569506a038c4143c4084f9d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b4777230b2d9548aa23ad75ab0b8a4.png)
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2024高三·全国·专题练习
解题方法
6 . 已知函数
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640bc81985e113c5340eea1860a470b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
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2024高三·全国·专题练习
7 . 已知函数
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8374736d300dcf2ca4426993fb5d1296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
您最近一年使用:0次
名校
解题方法
8 . 已知
,其中
为自然对数的底数.
(1)当
时,证明:
;
(2)当
时,
的最小值为
,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94777f63ecc4d1cd9b987101a17ebab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a262d480584627cf6692ff7685dd130.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172069f76b5517ed5fa3c8cd963f64dd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4f647724654e761774d92b838d224a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
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9 . 已知函数
.
(1)求
的极值;
(2)若过点
可以作两条直线与曲线
相切,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc1b193aa193153eb402df8560778e6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/153fd5ba2a1a36ea1a7aee469663ddbd.png)
您最近一年使用:0次