名校
1 . 已知函数
.
(1)
时,求函数
的零点个数;
(2)当
时,若函数
在区间
上的最小值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d6d0b9e8982bf10e04db4603bb82aa.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579e2c39e6c0a640357e3b0ccd6f954a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-04-29更新
|
240次组卷
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3卷引用:重庆市清华中学2020-2021学年高二下学期4月月考数学试题
2 . 若对任意
,总存在两个不同的负实数
,使得
成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2dc39e2b2e3de03e2cf6d8b3c77d69a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f57d68a02478d9242850ba86a9cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 已知函数
,
.
(1)当
时,求曲线
在点
处的切线方程;
(2)当
时,关于x的方程
在区间
上有两个不相等的实根,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70521cecd590b62b84ed0319c5ea437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c1c003ff866467dff8a05f663171e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdfed8d6862125dc1fecfce0322a750.png)
您最近一年使用:0次
2021-01-18更新
|
121次组卷
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2卷引用:重庆市清华中学2022届高三上学期9月月考数学试题
4 . 已知函数f(x)=lnx﹣ax,a∈R.
(1)若f(x)有两个零点,求a的取值范围;
(2)设函数g(x)
,证明:g(x)有极大值,且极大值小于
.
(1)若f(x)有两个零点,求a的取值范围;
(2)设函数g(x)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dde687ee9908029703317f1bd92ba477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f836c4d79e64a0a9e774d8316d8af14d.png)
您最近一年使用:0次
名校
解题方法
5 . 已知函数
,
,
是自然对数的底数.
(1)若函数
在
处取得极值,求
的值及
的极值;
(2)求函数
在区间
上的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bccfc5c3209354f6c86ee4a3b43da818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a2e5749d0a6e895187bb3cff9c9445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a2e5749d0a6e895187bb3cff9c9445.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a2e5749d0a6e895187bb3cff9c9445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48cb5d7bd2f5dddcd32268e7fc07dd19.png)
您最近一年使用:0次
名校
6 . 函数
导函数
的图象如下左图所示,则函数
的图象可能是( )
![](https://img.xkw.com/dksih/QBM/2021/8/1/2776561047928832/2779891468976128/STEM/2239227c-b41e-4f11-8576-dd62d80af449.png?resizew=209)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://img.xkw.com/dksih/QBM/2021/8/1/2776561047928832/2779891468976128/STEM/2239227c-b41e-4f11-8576-dd62d80af449.png?resizew=209)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-08-06更新
|
82次组卷
|
2卷引用:重庆市清华中学2020-2021学年高二下学期4月月考数学试题