解题方法
1 . 已知函数
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/c50539f4-a38a-4e0d-9ca1-b8965c6f8e44.png?resizew=246)
(1)求
的解析式;
(2)把
的图象上所有点的横坐标伸长到原来的
倍(纵坐标不变),得到函数
的图象,证明:
在
上有最大值的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4d39076312ff7c6e94ce2d89fc5a83.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/c50539f4-a38a-4e0d-9ca1-b8965c6f8e44.png?resizew=246)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee74315c62da704465b46d9baaf26c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dfaecd216156a20f80229dd48a10c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412bb3dbe6f1b73da2100b3f1a7001f9.png)
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2021-10-12更新
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2卷引用:湖北省金太阳百校联考2021-2022学年高三上学期10月月考数学试题