已知向量
,
,
. 若
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2845decd0d34b9c3ce2b3339241521c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b02a325f0c63e903ca82256e2e12ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebc6dc981f51680676a9745f1a339b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b24e7b647da881741b1b9de299d3362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
更新时间:2022-12-08 15:40:20
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填空题-单空题
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较易
(0.85)
解题方法
【推荐1】在
中,D是BC的中点.若
,
,
,
,则下列结论中成立的是________ .(填序号)
①
;(2)
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1019935e12db0fa64e50056f688e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0c566d351afa62188696128ce18f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0ee42dade63ee9f1a405ca1a2f3ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e33a7358a0360669acf75e22927e727.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f093374a030d06eb5389a5d7c888b3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32ff1298745f691d132d7e56ebaeea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1deb7c3657efc5d23bf7a5ada6ab9151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/670086e6be2bf15c30073fc49c7ca7cd.png)
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【推荐2】给出下列等式:
①
;
②
;
③
;
④
.
其中等式成立的个数为________ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be34f50e61e59b2eed2042baa1538a3d.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c5909e92cf5f78e81be0cb7fe4c225.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a339f7033f16dc8bbbff3965f671158.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d658dbe8354bff416ad61ac370dcde1.png)
其中等式成立的个数为
您最近一年使用:0次
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【推荐3】在
中,
是
上一点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89acc82cb747ff57569b0bcaf68f877d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a004e02549e59e9cac35134595cab063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89acc82cb747ff57569b0bcaf68f877d.png)
您最近一年使用:0次
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名校
【推荐1】已知点
为
所在平面内一点,满足
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2cbd33e1c82b8b0fd164c7b57922d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344cc24b575f4fd1ea7fe8ce5612fa9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d3a1f92f52c4d3c43f24a47c3eaae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
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解题方法
【推荐2】已知向量
,
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89acc82cb747ff57569b0bcaf68f877d.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fdb92270a8002338a5c22ec929c25b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9145fba90fd3338944898b5f089576ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc8c20936e007dcb52cd946e781117e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/073cc1a4bfc55840bab1b09be90cca70.png)
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您最近一年使用:0次
填空题-单空题
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【推荐1】已知向量
,
,向量
满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6551f52f6315cb7b505531e55f40a057.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6234d132ead5cf8194883f1b3fe22622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66de249b7c29faff4f8ff786ba21d500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61e354bb76daad9cda5735f594f1c86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc14276188380671a5bb5d1a0ed6d12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6551f52f6315cb7b505531e55f40a057.png)
您最近一年使用:0次
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解题方法
【推荐2】设
的内角
,已知
,若向量
与向量
共线,则
的内角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
__________ .
![](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/0334bc85843337c4dfcfdc5c638f9f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54518002c6388ff6c39539edbd14535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e81abaf1e9c32242fd6e77f17deff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
您最近一年使用:0次