已知函数
,其中
是自然对数的底数.
(1)若
在
与
处的切线斜率互为相反数,求
的值;
(2)设
存在极值点
.
(i)证明:
;
(ii)设
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8ae4cd4215fc3bb0b85c5755d9d66e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff5a8f648d375cc6ccf6649cab698c6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f4eff3125c5e63a994ba1ad5be58e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7152aea5d046953a8c931571be7c529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1b76f4a0c9de082c7b4eb9dd99877e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015740ce0b7022cf0a5503747c020999.png)
(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9afdd7fee822c2fbefa20e734e8c8f.png)
(ii)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f42fac6e4c5c1b5834bca8f1e8163b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b108b585232548fafccf035e39047373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
更新时间:2022-10-17 16:05:55
|
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解答题-证明题
|
困难
(0.15)
解题方法
【推荐1】已知函数
.
(1)若曲线
在
处的切线与直线
平行,求实数
的值;
(2)若函数
有两个极值点
,
,且
.
①求实数
的取值范围;
②求证:
.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6a2c0b6e5e8f76a466155b1f4682e8.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f42457c945c02fd46fb018712e73171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87990e01890e66a5b4f53c846538b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8830dd6909146c867a27439e0a4afc.png)
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解答题-证明题
|
困难
(0.15)
解题方法
【推荐2】已知函数
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(e为自然对数的底数)
(1)当
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都相切,求b的值;
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f6ad09c04177babb84ec1f65da48ca.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffecb03c47be920254c4ccffa5b222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d1f05bfe75dbdff9a94b4d9c893a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8ca3aa2d1ba52e82613d0d65d800e7.png)
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【推荐3】已知函数
.
(1)若曲线
在点
处的切线的斜率为1.
(ⅰ)求a的值;
(ⅱ)证明:函数
在区间
内有唯一极值点;
(2)当
时,证明:对任意
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599345b543a3ccaa527b1d688901632e.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(ⅰ)求a的值;
(ⅱ)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ff8dca35b759d3051b62badd7d76bc.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe2115d883d13561e28006d3f6143b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a90f71a22daa4df7bd75c1e3e66fcb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐1】已知函数
,
.
(1)讨论
的单调性;
(2)若方程
有两个不相等的实根
,求实数
的取值范围,并证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0475176098f9b774e0a9e3ede4ada3d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6e28dbfcdd6fb66b9ff759be044287.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81861bdb48b1df503c6550dbff5923c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab825645822c950a11ffabcaabb29df0.png)
您最近一年使用:0次
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【推荐2】设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80a2b4a7b63828b61ffabcfdbf2a7359.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.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/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542893790445d6d888d9ff91fd215c9c.png)
(ii)证明:对一切正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f917b7b9847cb7cef1da1ae3d4847c.png)
您最近一年使用:0次