名校
1 . 平面直角坐标系xOy内,点
,动点
和Q关于原点O对称,
,
.
(1)以原点O和点A为顶点作等腰直角三角形ABO,使
,求向量
坐标;
(2)若
且P、M、A三点共线,求
的最小值;
(3)若
,且
,
,求直线AQ的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40630a669f4eedf626bc24851df10c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8293156150e4eb50a1bdd71090917dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)以原点O和点A为顶点作等腰直角三角形ABO,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96d9e134e1820d80612be1bc590993e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329fdf7d989f77a32ca9e0361a9cc956.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881a9727fa891bd80ac7c64abb0518ab.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9703534eceb8ccbfebb7a4510d5530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98bbff91df26858f512a572c81907716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36753c437b2799a0afa028ae919f8b4c.png)
您最近一年使用:0次
2 . 已知
分别是与
轴,
轴正方向相同的单位向量,
,
,对任意正整数
,
,且
.
(1)求实数
的值;
(2)求
;
(3)求
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4868d6790066750d6fc1b361b41bf4.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/a6f9805feaccc59acb61ad9897081faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03f83ebb40e2de244b71634785d7618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f07c5cf3bc3271dbbc176caf07312aa.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb1a737e6b988763c1ce98c63855784.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7981cba94ea74f5c7669ce43ca37f832.png)
您最近一年使用:0次
名校
解题方法
3 . 已知动点
满足
,点
的轨迹为曲线
.
(1)求
的标准方程;
(2)过点
作直线交曲线
于
两点,交
轴于
点,若
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ff7e0ef1f622120cc1b18e9d3e80ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6ddefa7dfa298a55732e9b2a0e1aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633164472625a83865de99005a939b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32705e629d8b9187b53efeee6605af15.png)
您最近一年使用:0次