在平行四边形
中,
为线段
的中点,
,
,其中
、
,且均不为
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080881113dcfedbb37be834669306a05.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68518e208f3db53e37c265f4943919d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a330b6de38b7ef2933726d717b2b6d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cccdff49c3efe6e7a7dbbf69db9319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0440f82f1344e0c04ebc467e871a409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080881113dcfedbb37be834669306a05.png)
19-20高一下·全国·课后作业 查看更多[2]
更新时间:2020-03-05 00:36:08
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解题方法
【推荐1】在平面直角坐标系xOy中,已知双曲线C:
(
)的左焦点为F,点B的坐标为
,若直线BF与双曲线C的两条渐近线分别交于P,Q两点,且
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【推荐2】如图所示,点
是圆
上的三点,线段
与线段
交于圆内一点
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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【推荐1】在
中,
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上的点,若
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的值为________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abee517b7672dbded5cde5a6bea9e847.png)
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![](https://img.xkw.com/dksih/QBM/2021/11/9/2847676282470400/2847710754955264/STEM/e4f650aa8e8d4850906b0a2e142bc689.png?resizew=188)
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【推荐2】已知
三点共线于直线
,对直线
外任意一点
,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0690e324e6bb25b2202969d07aa38f2a.png)
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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