已知向量
,
,
.
(1)求与
共线的单位向量;
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f4dcf415977dea53f52a85b6b82136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f74cd42a16da88498dcb9e4dfc6d9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e18ee18ea38ec5a0d0b2c0ff3f7f7b.png)
(1)求与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4cf56fb74f74c6a0a68f624d1ddd4f8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b29ae6185abc6dcc767578c8cca54d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
更新时间:2023-03-23 16:30:58
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【推荐2】已知向量
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a76fb9b9cc6fe671e89d645573ab402.png)
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(2)
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解题方法
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