1 . 向量“
”是向量“
”的___________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf622559035c0764b67644604514c17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3854a1870df3dfab871bb1b15d41cb07.png)
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2019-12-04更新
|
404次组卷
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2卷引用:内蒙古自治区鄂尔多斯市达拉特旗第一中学2023-2024学年高一下学期第一次学情诊断(4月月考)数学试题
名校
解题方法
2 . 给出下列四个结论:
① 若
,且
,则
;
② 若
,则
;
③ 在
中,角
所对的边分别为
,
,则
;
④ 设
,若
是平行四边形(
为原点),则
,其中正确的序号是_______ .
① 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/469af82d4da03f4cb6ea6f3710094a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7640198689368a1bcf68bd6dac5e0c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a90f1e7b09ade6210e2ded8598827a.png)
② 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f4c0bb1bcbee3e8e418e5a6c2741f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
③ 在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63457de1f2e9b99ade124f21ab8a8b8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c766087b9bb164262dc4ed10f769b04c.png)
④ 设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6abea416103ca29aef3af910b66e0a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3160dc475df1408d0feeb3556b9f960.png)
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