(1)已知
,
,且
//
,求
的坐标.
(2)已知
,求与
垂直的单位向量的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa3610a990287d3ac756abae406540d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66de249b7c29faff4f8ff786ba21d500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1025572b15927ce2c1d7c1a3c97685b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
更新时间:2024-02-27 12:47:59
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解题方法
【推荐1】已知向量
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71104aba2ebda9979afc64840e4b54c9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e59719c218a51f2deea9f167e57b65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd20a977ce55442d50216caa16f7e1d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076559f08d17fb25e82886e791719e52.png)
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
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【推荐1】已知椭圆C:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
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解答题-证明题
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【推荐2】如图,已知矩形
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/abedc139-0dd3-4138-99bd-6a77170deee8.png?resizew=146)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef9d59074422189c31b540dcbdc680b.png)
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