名校
解题方法
1 . 已知
,则下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4416140c08d2c49da9f7eeeb2cd9110b.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
名校
2 . 已知向量
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31f58e1a076ff63b3d88974781edac7.png)
,且
,
,其中
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c39a715d1b3a985c20aa399f4394514.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31f58e1a076ff63b3d88974781edac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7253dfe76f7ed7c33921776bb0e001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f32595de21ddf175783168ce26d629d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5732b7447972dda107bf1a525aca5ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edaa8040b9b8e341d7fda88371d91b0a.png)
A.![]() ![]() ![]() | B.![]() |
C.当![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
3 . 如果函数
满足:当a,b,c是一个三角形的三边长,且
都存在时,
也是某个三角形的三边长,那么就称
具有“性质P”,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b4db74fcf367ea0cd1e6ff95fed441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b4db74fcf367ea0cd1e6ff95fed441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.![]() |
B.![]() |
C.当![]() |
D.当![]() ![]() |
您最近一年使用:0次
2023-04-06更新
|
391次组卷
|
2卷引用:2018年清华大学自主招生暨领军计划数学试题