名校
1 . 已知函数
,
(其中
,
,
)的图象与
轴的交点中,相邻两个交点之间的距离为
,且图象上一个最高点为
.
(1)求
的解析式;
(2)先把函数
的图象向左平移
个单位长度,然后再把所得图象上各点的横坐标伸长到原来的2倍(纵坐标不变),得到函数
的图象,试写出函数
的解析式.
(3)在(2)的条件下,若存在
,使得不等式
成立,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93778ac16acb542c259b9c4c49b410b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae7bdbc3dca4c8e4a06f4bea3a7f20c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)先把函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
(3)在(2)的条件下,若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f72ab73187a21c812c28a9f3a8be96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8c88b4e259843fe8a35a4461b2a494.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-01-20更新
|
656次组卷
|
3卷引用:重庆市北碚区2019-2020学年高一上学期期末数学试题
名校
2 . 函数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbbac3f9b6b1e742e2661ba26a9b05b.png)
A.![]() | B.![]() | C.3 | D.5 |
您最近一年使用:0次