已知函数
.
(1)若函数
在定义域
内单调递增,求实数
的取值范围;
(2)对于任意的正实数
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba37eb8245f9ee71ab86cdf1df54354d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)对于任意的正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7705b0b304ae2502341486bcb8bf8a.png)
更新时间:2018-07-31 11:45:58
|
相似题推荐
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】已知函数
(无理数
…).
(1)若
在
单调递增,求实数
的取值范围:
(2)当
时,设
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc888285d8f06437c873aab338c43438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/872f7b170d31d1d464aba4f99e370721.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629c05d95fa1ab2c3b526cf362a460e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a56d20f911aa260a22077cf5f70b3880.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2】已知函数
.
(Ⅰ)若
在定义域内单调递增,求
的取值范围;
(Ⅱ)若
存在极大值点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d67137faaa0d37d6e6d11061096f4c3.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)若
![](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/3b012136b0cf401a28b44da099fc87a6.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】已知函数
有两个零点.
(1)求a的取值范围;
(2)设
是
的两个零点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512b7e63c0299fa5f7e9838251cfaf37.png)
(1)求a的取值范围;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐2】已知函数
.
(1)当
时,比较
与1的大小;
(2)当
时,如果函数
仅有一个零点,求实数
的取值范围;
(3)求证:对于一切正整数
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7939cb4bac8d532c6c985ea911c31629.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/4232fb8753635ae49af3a1c26803894f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27716788e838bd934952fe13c5e4671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)求证:对于一切正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181600214a30376fa58599f0712ce167.png)
您最近一年使用:0次