名校
1 . 已知向量
,
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
________ ;若
与
的夹角为钝角,则
的取值范围为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a08ed47d6563ffa369eec7374cccffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165f910a08822b71a4c73e8f4a159e3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571bbe3e4cd85e64fa8ef0baae39fe6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54c619311cad1b26c913cabde234cf2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-10-11更新
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618次组卷
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4卷引用:天津市红桥区2023-2024学年高三上学期期中数学试题