已知向量
,则下列说法错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05dac4a4e2312d36aba8e4224b15e3ab.png)
A.存在![]() ![]() | B.存在![]() ![]() |
C.对于任意![]() | D.对于任意![]() |
23-24高一下·江西·阶段练习 查看更多[2]
更新时间:2024-06-03 18:40:33
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相似题推荐
单选题
|
适中
(0.65)
【推荐1】平面向量
,
,
(
),且
与
的夹角等于
与
的夹角,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016e4d15ab8f5359f6aa3b42674b0c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b015405ea7f9993d0247c63b391680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e910490343596f43a3bbda0926fb7b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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适中
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名校
【推荐2】设
为坐标平面上三点,
为坐标原点,若向量
与
在
方向上的投影相同,则实数
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491190531ac52bab4368da8f60cecd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794efd8cf0cc386faa170d01f357b1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7195a0b5b59c9462b9faaf5a9fcfc6e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.2 | B.![]() | C.3 | D.![]() |
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解题方法
【推荐1】向量
,
满足
,则
(
)的最小值为( )
![](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/30c8b29d70b3bc87623b4507ea589deb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f45feb41fbd00a8f6d2cf07b90b44a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd9736828195f010db4e1f0a9dea7a4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
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【推荐2】如图,设P是单位圆和x轴正半轴的交点,M、N是单位圆上的两点,
是坐标原点,
,
,
,
,则
的取值范围为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/e2dca177-53a1-4817-a90c-bf463a3eb816.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3ac2f8aaa72ecb8275912bacb9c00c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4313695734a23eb72505011324696a31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7cbba6f130b84315180391c177d0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddcec9ba87adb5c54e6bc09bd7b232cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/e2dca177-53a1-4817-a90c-bf463a3eb816.png?resizew=151)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
【推荐1】已知向量
,则下列结论不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20bc85bdfd0b8653aa5ac2188e2a762c.png)
A.![]() | B.向量![]() ![]() ![]() |
C.![]() | D.向量![]() ![]() ![]() |
您最近一年使用:0次
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适中
(0.65)
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【推荐2】已知向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f01f48e86e66159259ce6377fe52620f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8bbc71901519504a287d7ac2146ff95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a18798408a1b91fdb12deb79f0b562a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐3】已知向量
,且
与
为共线向量,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d24fe8d630987a7e5bd89e10b82bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d31b07a2081bfaaf77c0062193ab173e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11acde84b2417e39ccb7675f84ce301a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7a0d7bbb560e71a585cc5e25906ba2.png)
A.充分不必要条件 | B.必要不充分条件 | C.充分必要条件 | D.既不充分也不必要条件 |
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