名校
1 . 已知函数
(
),曲线
在点
处的切线与直线
垂直.
(1)试比较
与
的大小,并说明理由;
(2)若函数
有两个不同的零点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5a76672ab542701face0a004ca1c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.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/1e8a3365e99f926b1dafa901ab232152.png)
(1)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e310e5b7100597e72f68914c9d85a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9fc1d337f2e1974952cd5731cc4c44.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5b9f57d3634f8337f1414f8a2a2dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0fd6297d9af0dbfaccd08a53054ec5.png)
您最近一年使用:0次
2017-08-25更新
|
794次组卷
|
3卷引用:河南省郑州市第一中学2018届高三上学期入学考试数学(理)试题
河南省郑州市第一中学2018届高三上学期入学考试数学(理)试题河南省息县第一高级中学2017届高三下学期第一次适应性测试数学(理)试题(已下线)专题37 盘点利用导数研究双变量及极值点偏移问题—备战2022年高考数学二轮复习常考点专题突破
名校
2 . 已知函数f(x)=lnx.
(Ⅰ)若方程f(x+a)=x有且只有一个实数解,求a的值;
(Ⅱ)若函数g(x)=f(x)+
x2 – mx ( m≥
)的极值点 x1,x2(x1<x2)恰好是函数h(x)=f(x)-cx2-bx的零点,求的y=(x1 - x2)h’(
)最小值.
(Ⅰ)若方程f(x+a)=x有且只有一个实数解,求a的值;
(Ⅱ)若函数g(x)=f(x)+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f890c615c5af6329afbcbcb0c70b7592.png)
您最近一年使用:0次
2016-12-04更新
|
773次组卷
|
4卷引用:河南省南阳市第一中学校2023届高三下学期开学考试理科数学试题
解题方法
3 . 已知函数
,
.
(1)当
时,求证:
,均有
;
(2)当
时,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ef6e9eeec8cb282b7bcae1b6ef140f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ad15d55077899eaf489e35669876e4.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a68ec001145a37fb7cc4d9632e11870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c164755dc2d7cff80fb4c9cffc9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次