已知函数
.
(1)当
时,求函数
的单调区间;
(2)若函数
的两个零点分别为
,且
,求证:函数
的图像在
处的切线的斜率恒小于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df82c55d68b84a41f4edb2450041603e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02742fd9bf8122b22b570ddd1a39c4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8931fee33e1557c8fab1e3b5f718589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae74c724114bfeff024dd7b79f5edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eedbe3df721d8e47369a6542209ee702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
更新时间:2019-05-18 16:23:51
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知函数
,
是自然对数的底数.
(1)当
时,求
的单调区间;
(2)若存在
使得
,试求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b36a2b3ce7c0fe875a0f50bcdad72c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37d85a6b36808cdfe077eddca23d8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05da3f440c24f995eeaaa9a59bfdd92b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab0d94101ed1c76b6d05ac467e24a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】已知函数
.
(1)若曲线
在
处的切线与直线
平行,求
的单调区间;
(2)当
时,若
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea537812fb56fc67639d12641ccbd36.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6e4561bfb4f4498106bc36b2dc0c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ddf1c1312618661e5fe758ec1ef91e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605dc6c0ba3ea2d2320ca4459d97c55d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a6626c52a3fd0df66ebc4b6e87d63e.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】已知函数
,
.
(1)若曲线
在
处的切线在
轴上的截距为
,求
的值;
(2)证明:对于任意两个正数
、
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b356cd92f4e6a93c960d80fd9093e792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187c21027ff08411931d32c530b64fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771c5d3e7e824812b99ec5423c32ebc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:对于任意两个正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a93969738a9bb969f40cf587f1d5d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c57e8c3e08420e83bd55d17306dc91c.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
解题方法
【推荐2】已如函数
.
(1)当
时,求函数
的单调区间;
(2)当
时,求证:函数
存在极小值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7de402fe839aa53c7f29ea4b55fd1a7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/540faf57028f84450849091b2d758905.png)
您最近一年使用:0次