1 . 中国文化之美照亮生活,宋代的几何图案(图1)注重理性和逻辑的文化风气,中式美学的另一种浪漫,蕴含着数学对称之美.几何图案由函数,
,
与函数
(
)图像(如图2)分别关于
轴、
轴及原点
对称所得(如图3).
(1)若图3构成正八边形
,求实数m的值;
(2)若关于
的方程
有两个不相等实数根
,
.
①求实数m的取值范围;
②求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df28f28107cb72571abc94291e2c05d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4412dd71a98012db25a3535bbfe171a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/80f5a0e8-832b-4b49-a2bf-c8e39893899c.png?resizew=268)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/f7548380-7820-4b02-937c-d6a9350dbaed.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/af57deb0-f9c4-4a4a-a617-b89a37e24a2a.png?resizew=194)
(1)若图3构成正八边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17d4a6cf11cda87b3dfafaecdec683f.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
①求实数m的取值范围;
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cca093c8d357efeb34eae478368e58e.png)
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