名校
1 . 已知两个不相等的非零向量
与
,两组向量
,
,
,
,
和
,
,
,
,
均有2个
和3个
按照某种顺序排成一列所构成,记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef38f064d936d3972370b4a9a0886c58.png)
,且
表示
所有可能取值中的最小值,有以下结论:①有5个不同的值;②若
,则
与
无关;③ 若
∥
,则
与
无关;④ 若
,则
;⑤若
,且
,则
与
的夹角为
;正确的结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c902afad9e376e9f150aa952b7ded9f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412a97cab551338c7214860266e9bb77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24fb1649edf0c98a43aaf4b439744cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5e0efd6d6e4561277a8a1291ae4c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78637117e4976e53f02d39d19e48a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa620e1fff07c3742316c096bed4030e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d39b8fa85a329079fa0b83d8c808d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501dcc1b867b3deaaa229fd9fb0d8b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a357a6de00f47f97888ef514306384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b82b5000cb864de87c9bef53306a3b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef38f064d936d3972370b4a9a0886c58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7578198b4d50376885e4e5632b32c109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc39a21d03ee7ba9ad05aeb1958fbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb58883caf5c8ca1e94389839d294b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc39a21d03ee7ba9ad05aeb1958fbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d18fee3af07e00ebe0633086835e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc39a21d03ee7ba9ad05aeb1958fbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd3218ac3ae2137649597508f87187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0107fb1dea0d998e9dcf465b7f38e2a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d1c3970ec37a525d1405dc6d3b2126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8722b5f981ecebf0e9b6360f1e1b7895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6df4631f1b008a9a0cb8b0196add8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
A.①②④ | B.②④ | C.②③ | D.①⑤ |
您最近一年使用:0次
2019-11-20更新
|
715次组卷
|
3卷引用:上海市第二中学2019-2020学年高二上学期期中数学试题
名校
解题方法
2 . 在
中,角
的对边分别为
,向量
,向量
,且
.
(1)求角
的大小;
(2)设
的中点为
,且
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed498b8aab0dfed96bd7d540f55fc018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0ae8e92dd3119d41f2c830ea526516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ace74bfb716753490ebe0e740ff5baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ced53f3511b0e4c57d8fc83c112ee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c4f5ec6788f87577eb8352fd8abf635.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3724ff82289aa5907892b50f936677cb.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74094c51b5ee19992e12e98bfab66d77.png)
您最近一年使用:0次
2017-02-21更新
|
6615次组卷
|
10卷引用:2015-2016学年内蒙古鄂尔多斯一中高一下期末理数学试卷
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