名校
解题方法
1 . 如图,在矩形
中,
,点
分别在线段
上,且
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5203b16524b496a7272b5735aad23ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64d3311a2bb737e151961dcb72692dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59809f2fa9ce4c833cdf5fe102feb8d8.png)
您最近一年使用:0次
2024-03-21更新
|
1707次组卷
|
4卷引用:2024届辽宁省高三二模数学试题
解题方法
2 . 平面上有一组互不相等的单位向量
,
,…,
,若存在单位向量
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213274c18599bc12d38d9db731f5790c.png)
,则称
是向量组
,
,…,
的平衡向量.已知
,向量
是向量组
,
,
的平衡向量,当
取得最大值时,
值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195334905e2f190f958dbf5951456f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c76916c6ff302cf4fb4b6ace5bb3a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337d0dc1076cfdb02ffb40bf4dac0d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213274c18599bc12d38d9db731f5790c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81e84d94bf8392d4dddfd1c4ec283af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195334905e2f190f958dbf5951456f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c76916c6ff302cf4fb4b6ace5bb3a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337d0dc1076cfdb02ffb40bf4dac0d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694fe9d0e953ef1a6524ff80e7a0fba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27699fcd8645757a34bd295b426052be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de38820e63e0564899185f1bddbf3c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db92d66fa701ce12ae0cd529121f6845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a18a83264cadb091d52945a06b8f684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883798a4b2ce648a28c6e49b83d6f21a.png)
您最近一年使用:0次
名校
解题方法
3 . 在
中,角
的对边分别为
,若
,则
的最小值是_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/6b7499d89559ed01ec4e8157fb9f31ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646286a6f3ca5cf881f0b0a6690b82e9.png)
您最近一年使用:0次
名校
4 . 已知点
,点
是
内(包含边界)一动点,请你结合所学向量的知识,求出
的最大值为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d15519119f08636c1e7425418d30b39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcda62388ba3f9747413103bd48e1630.png)
您最近一年使用:0次