若
,则
的最小值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9953da1f887cf0d3490cef832f2659e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3910a0f217d8109b9467f740fc84a73d.png)
更新时间:2022-07-13 09:14:47
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【推荐2】已知
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【推荐3】视力表是根据视角原理设计的,所谓视角就是由外界物体边缘上的两点在眼结点处所形成的夹角,用
表示,其单位为分.视力表以一分视角(1′)为单位进行设计.我国视力的记录采用“五分记录法”,视力表由14行开口方向各异的正方形“E”形视标所组成,从上到下分别对应视力4.0,4.1,……,5.2,5.3,从上面的第一行开始往下,每一行“E”形视标边长都是下一行“E”形视标边长的
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解题方法
【推荐1】若
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【推荐2】已知正数
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