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1 . 已知向量
,
,
,
,若
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc97dbad947c85e02c28dd08ddb57d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4695dd11fc436e4ce9337987d0a5f932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70facc9bc02af0867d248407bd317c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d760204a261aae858ee3e353882899.png)
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2021-07-10更新
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5卷引用:湖北省襄阳市宜城一中、枣阳一中、襄州一中等五校联考2020-2021学年高一下学期期中数学试题