名校
解题方法
1 . 设函数
,其中
和
是实数,曲线
恒与
轴相切于坐标原点.
(1)求常数
的值;
(2)当
时,关于
的不等式
恒成立,求实数
的取值范围;
(3)求证:对于任意的正整数
,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d898c0ea26601b90dccfb8c11ae4712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e46371f310e03a153a1698aad9d4c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:对于任意的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed08261f7e9b82eb1906cca1abff1a6.png)
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752670428037120/1753289400385536/STEM/36cda1a30cef44fd841f3865b20ba631.png?resizew=3)
您最近一年使用:0次
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebdb25f3eebf5e0314999c8aa7ed43d1.png)
,
在
和
处取得极值,且
,曲线
在
处的切线与直线
垂直.
(1)求
的解析式;
(2)证明关于
的方程
至多只有两个实数根(其中
是
的导函数,
是自然对数的底数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebdb25f3eebf5e0314999c8aa7ed43d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bbf3854307b2b6ab937a3e3e40e05a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971905ea129aec0ca7c325f60260c7e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd86badb20015aa65328fda1e43a117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a241d6ef06bc899a9dbb28b62c0aec5c.png)
![](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/512f4c29ff276b7f35052ad4cc255ab5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9857fdafea0bb1b836c9bcf1d735d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
您最近一年使用:0次
2017-05-16更新
|
945次组卷
|
2卷引用:福建省三明市2017届普通高中高三毕业班5月质量检查数学(文)试题