边长为2正三角形
中,
为
中点,
为边
上的点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d61b7ff71c39eee558f6ad00e8b40a.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad72c81de9c2b3e114bd9de26b2ebbbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d61b7ff71c39eee558f6ad00e8b40a.png)
更新时间:2020-04-21 08:19:48
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解题方法
【推荐1】设点
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__________ (用
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【推荐2】已知一个点O到
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【推荐3】已知圆
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【推荐1】在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
【推荐2】在平面直角坐标系中,已知
,
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上的动点,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0812ea92afd60233426521798f5ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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名校
【推荐1】已知
为等腰直角三角形,
,OC为斜边的高.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/6c7442ce-8124-4f69-9f1d-85e4761fa12b.png?resizew=153)
(1)若P为线段OC的中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5137ba3ad6c2674c5ac6f4364db63b29.png)
__________ .
(2)若P为线段OC上的动点,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52705567101a48893de582656ef41527.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/6c7442ce-8124-4f69-9f1d-85e4761fa12b.png?resizew=153)
(1)若P为线段OC的中点,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5137ba3ad6c2674c5ac6f4364db63b29.png)
(2)若P为线段OC上的动点,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5539e6e58dfa51e750f2ab55b84b98.png)
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