设Ox,Oy是平面内相交成
角的两条数轴,
分别是与
轴、
轴正方向同向的单位向量,若向量
,则把有序数对
叫做向量
在斜坐标系xOy中的坐标,记作
.同时把有序数对
叫做点
在斜坐标系xOy中的坐标,记作
,已知在斜坐标系xOy中,
的三个顶点
,且A,B,C异于点
,则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c20e88a33043f4279fff360c81006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af62a51e61a58e7fb5ff757d34695ca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5253a9a71037d60059b60237824193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1826aa6f667b181d7aabc06e35365308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/19b22b038e24990aa2534892bdae5e4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() |
B.![]() |
C.若![]() ![]() |
D.![]() ![]() ![]() |
更新时间:2024-05-22 08:59:43
|
相似题推荐
单选题
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适中
(0.65)
名校
【推荐2】已知圆
上两动点A,B满足
为正三角形,O为坐标原点,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10274381f2cfe52e79b99d9e98b804e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a704469569b68ee11ab166dba3f686f0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
【推荐1】已知平面向量
,
满足,
,
,若
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03621505cf45b7ad14733dbc3e1c84ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3dc93b1050aab7f70ffb2905e8a7727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4df679cd9fab66c4f4a556985bb4c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b08b4904d0431a0f0b297fcba4c434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f26f260ba3b9a16474686173a2fcbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c312ff2525491c998179cc5fa9438a1e.png)
A.1 | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
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解题方法
【推荐2】已知非零向量
与
满足
,且
,点
是
的边
上的动点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d801e028438dee59dd35b0dc1485b239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a77736b336627cd847697877bd93cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57624cd6e3fc1050e98dbedfa66802b9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】给定两个不共线的空间向量
与
,定义叉乘运算:
规定:①
为同时与
垂直的向量;②
,
三个向量构成右手系(如图1);③
如图2,在长方体中
,
,则下列结论错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/bf4d38b7-e81f-499a-a7d7-a1f020a31794.png?resizew=269)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc11d170d9af305d1961166be479996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc11d170d9af305d1961166be479996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc11d170d9af305d1961166be479996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47de82b1e6a3e52dd6344f3102b4bf8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b98a13eacfcc6743aa433d7674e18e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/bf4d38b7-e81f-499a-a7d7-a1f020a31794.png?resizew=269)
A.![]() |
B.长方体![]() ![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
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解题方法
【推荐2】对于非零向量
,
,定义
.若
,则
( )
![](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/274b8e79f90e6fd094131da01e290ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a05e093f40d40b31ce239fe8f234a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fcae49568d935be386ebc3b853baafe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次