解题方法
1 . 已知向量
,
,
满足
,
,则可能成立的结果为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29276b43a2950ed71f0f9629a35dfa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2040f303162767d389602faa16c53a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
2 . 在
中,
,P为线段AB的中点,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20522249c11cebb254ebb603161aaea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73de3a47976a9e064dd7e3091894acc0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知共面向量
满足
,且
.若对每一个确定的向量
,记
的最小值为
,则当
变化时,
的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96022a881e03e32d3483d997c3f170c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72c2391cf1a859ca3a3dc1861ae4121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b364aa55ed2841d7c9f3790626193e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0203950725f8436fcb30642e9e6e003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086ddf5e2bc5c38b31ba53152be55b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086ddf5e2bc5c38b31ba53152be55b0a.png)
A.![]() | B.2 | C.4 | D.6 |
您最近一年使用:0次
2017-04-28更新
|
1746次组卷
|
3卷引用:云南省经开区2021届高三数学(理)模拟试题(一)