1 . 已知函数
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897858638028800/2905694596751360/STEM/580f71ea-6ef8-42e3-8919-bea0bc788c86.png?resizew=202)
(1)求函数f(x)的解析式:
(2)证明:
,使得
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ea345085e0957f48cb30766604589c.png)
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897858638028800/2905694596751360/STEM/580f71ea-6ef8-42e3-8919-bea0bc788c86.png?resizew=202)
(1)求函数f(x)的解析式:
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66d64d61aa6daee84d844e1458c009e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce00a50660b3f6071dc14d9b872874e.png)
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3卷引用:江苏省无锡市第六高级中学2023-2024学年高三上学期10月月考数学试题
名校
解题方法
2 . 函数
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/2021/10/21/2834230574768128/2834301581647872/STEM/4f935862-77aa-44a7-9f83-2fd8ca04f0ef.png?resizew=177)
(1)求函数
的解析式;
(2)已知数列
满足
,且
是
与
的等差中项,
①求证:数列
是等比数列;
②求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27cd15ee656d39a864fbecf781f23c5.png)
![](https://img.xkw.com/dksih/QBM/2021/10/21/2834230574768128/2834301581647872/STEM/4f935862-77aa-44a7-9f83-2fd8ca04f0ef.png?resizew=177)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d10a513447f40b5130c7527ae289b2.png)
①求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d17d72d1d20d385920c3d9da6bed8bb.png)
②求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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2021-10-21更新
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2卷引用:甘肃省兰州市第一中学2021-2022学年高三上学期第一次月考(10月)数学(文)试题
解题方法
3 . 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