21-22高一·江苏·课后作业
1 . 若
、
且
,则
点的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b62194097ac66a5093c57fca2f5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24217b109abd2e90fda8c9ffaa061c1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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21-22高一·江苏·课后作业
解题方法
2 . 已知
,B点坐标为(1,0),
,
,且
,求点A的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bad658e33513bf106d1d6bda984d07f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3bb7ccb422f0c02385a5adcd1606c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9756d2ddd3731ebe792febcbbea3b0ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07867e9ba815fe5cc5884b36dc24e49b.png)
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20-21高一·江苏·课后作业
名校
3 . 在Rt
ABC中,∠BAC=90°,AB=2,AC=6,D为AC边上的中点,E为BC边上一点,且
(0<λ<1).
(1)当
时,若
x
y
,求x,y的值;
(2)当AE⊥BD时,求λ的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e513fd59e59bda50100de1b4571a235.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ead0d95d94c4650f8030f18e5d58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ea7950b83538f786f47143c6644cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
(2)当AE⊥BD时,求λ的值.
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