已知向量
,
,则
在
上的投影向量的模为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f726edf8cca26e1011faa7101c506e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19baae22bd07eed23e25db63ad8d29a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.1 | C.0 | D.![]() |
更新时间:2024-06-10 17:37:41
|
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解题方法
【推荐1】直角梯形ABCD中,
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在
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A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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适中
(0.65)
名校
解题方法
【推荐2】已知实数x,y满足
,若向量
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ac8dca35be6ad1bc5a5bee1e50d969d.png)
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A.![]() | B.![]() | C.0 | D.3 |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
解题方法
【推荐1】已知向量
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f18996bd00253c3ad9f91780103affb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802f29687cbfc0eb5a125b879a1b3e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73208c7f51d83f204cb8bdfd71373157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
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【推荐2】已知O为坐标原点,点
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A.![]() | B.![]() |
C.向量![]() ![]() ![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
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【推荐3】已知向量
,
,且
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
解题方法
【推荐1】下列命题中正确的个数为( )
①若
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②若
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③若
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①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c64f4d4e4183455cb77ae54ccd44247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e9d440f180d0d8fb67b89d5c370158.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dfd95b2e1d2c7f2a85fffe24f62686d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe695b6c3756831c512313d66145258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec6df8a1e8ccc7a0dc182efa0a53cdb.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f18996bd00253c3ad9f91780103affb.png)
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④若
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A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
解题方法
【推荐2】已知
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您最近一年使用:0次