如图,将一张边长为
的正方形纸
折叠,使得点
始终落在边
上,则折起的部分的面积最小值为______________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2022/5/22/2984753959911424/2985510452805632/STEM/161f7f816f5345e38c6f067c8e2d2c24.png?resizew=243)
2022·上海浦东新·模拟预测 查看更多[3]
更新时间:2022-05-23 11:39:28
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【知识点】 求二次函数的值域或最值
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【推荐2】已知函数
,
(
是自然对数的底数),对任意的
,存在
,有
,则
的取值范围为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f53f81bca037a4383c1fab122a3cd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa6dbb3bc8c01505db52573b9379cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f9d255ca420fa2486b11fcb7763b44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1774be56515d14a57b4a79d74df5387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e8dc00cdc96860c9cbf8ac09677fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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