1 . 如图,正三角形
边长为2,
是线段
上一点,过
点作直线
的垂线,交线段
的延长线于点
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b09c2a26eb63ff4de7576d4f153b7c4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/4790cb42-9464-475e-aa17-b3015a2a08ee.png?resizew=136)
您最近一年使用:0次
2020-01-10更新
|
415次组卷
|
2卷引用:2020年1月中学生标准学术能力诊断性测试诊断性测试文科数学试卷
名校
2 . 对于非零向量
,定义运算“
”:
,其中
为
的夹角.设
为非零向量,则下列说法错误 的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445bc991a4a02776199f7412c84f37c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2468403b3eba9e40bfa36f464e927738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd05525b42968591698afb4a0b875ba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445bc991a4a02776199f7412c84f37c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7cad34fccd0fe584087604e863f352.png)
A.![]() | B.![]() |
C.若![]() ![]() | D.![]() |
您最近一年使用:0次
2018-03-07更新
|
429次组卷
|
3卷引用:北京市汇文中学2023-2024学年高一下学期期中考试数学试卷