2014·山东烟台·一模
1 . 在实数集R中,我们定义的大小关系“>”为全体实数排了一个“序”.类似的,我们在平面向量集
上也可以定义一个称“序”的关系,记为“
”.定义如下:对于任意两个向量
,“
”当且仅当“
”或“
”.按上述定义的关系“
”,给出如下四个命题:
①若
,则
;
②若
,则
;
③若
,则对于任意
;
④对于任意向量
,若
,则
.
其中真命题的序号为__________
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/b821ac9dec7c462690443f2689fd0714.png?resizew=197)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/e90d06b43a9e46168ef27dd4becc9431.png?resizew=23)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/f916bc67006b4363aa0a80e96332be4b.png?resizew=141)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/bdc2d747122f4922a1647360d5785d35.png?resizew=57)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/cba9f8379e5847df96258aa61d04cbdd.png?resizew=47)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/c4c5198f1bc747c6ba30deb1173a36d9.png?resizew=103)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/e90d06b43a9e46168ef27dd4becc9431.png?resizew=23)
①若
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/59e54485217243c3b1d4b71d613c91fe.png?resizew=188)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/39cf3b07dc1d4e34a12a19a65f34e4f9.png?resizew=89)
②若
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/39ab310b2c144548bf6c3511de96ae5a.png?resizew=117)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/8ed74189b2bb416c8a5b4ae6180c2848.png?resizew=57)
③若
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/bdc2d747122f4922a1647360d5785d35.png?resizew=57)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/2f62aaa944cb454b962fa7a807198802.png?resizew=143)
④对于任意向量
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/9f57304acdcb4cbda68bfbbaedfa424d.png?resizew=108)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/bdc2d747122f4922a1647360d5785d35.png?resizew=57)
![](https://img.xkw.com/dksih/QBM/2015/4/22/1572081100144640/1572081106124800/STEM/9bde109d5d82430d9e198047d0581151.png?resizew=80)
其中真命题的序号为
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2016-12-03更新
|
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|
3卷引用:2014届山东省烟台市高三统一质量检测考试理科数学试卷
2011·山东枣庄·一模
名校
2 . 已知命题“
”为假命题,则实数
的取值范围是_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d777658d6aa3891c65cb9c8c35a5f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-11-30更新
|
2352次组卷
|
21卷引用:2011届年山东省枣庄市高三4模拟考试理数
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2010·山东烟台·一模
3 . 给出下列四个命题:
①若集合A,B满足
,则
;
②给定命题
,若“
”为真,则“
”为真;
③设
若
,则
;
④若直线
与直线
垂直,则
.
其中正确命题的个数是
①若集合A,B满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
②给定命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
③设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8730c814097db4d481342e810df529b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bcddc2ece6bcde9355e222e1cf9f56.png)
④若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb66ef80d2617520eb34e9d607e77b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10db6241a825efaab8a48e2b3020f9b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
其中正确命题的个数是
A.1 | B.2 | C.3 | D.4 |
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