1 . 已知向量
,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0bc26e6b57de46f3d17ab7c91ac08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/847126af87008b9d27d74ebcad0f03b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.![]() | C.2 | D.![]() |
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2023-06-14更新
|
209次组卷
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2卷引用:吉林省长春市十一高中2022-2023学年高一下学期期末数学试题
名校
解题方法
2 . 设向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1690431f28c11e639052e082ac37a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dbb1349e37a0e940735a4db30643abc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ab55ce496dc3dfdf3f0c459ccf49cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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2021-05-09更新
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7卷引用:东北师大附中2021届高三第四次模拟考试数学(文)试题
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3 . 以
为顶点的三角形是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dba00c7910d377f1c0cf37548b8555f.png)
A.钝角三角形 | B.锐角三角形 |
C.以![]() | D.以![]() |
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2022-09-28更新
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2卷引用:吉林省长春外国语学校2022-2023学年高二上学期第一次月考数学试题
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4 . 已知平面向量
,
,若
,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cadb456f43065bff1bf0167dcb6cd1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92215ebdecbd6b92de8044aeec7f8aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ff10f0b5104867080f8235fa0e01d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.-2 | B.2 | C.-6 | D.6 |
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解题方法
5 . 已知平面向量
,
.
(1)若
,且
,求
的坐标;
(2)当
为何值时,
与
垂直;
(3)若
与
的夹角为锐角,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6569e50f43b3d8645652ecc13b62066e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee0c015ebef334e1cce30f1592b5201.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46674852c9878a3ce082c0b7c232bbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec41eae333bbceddb0da14c824324d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41960bbc66bdc3b28be0138f83f9de5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ecb6af2d602608a80170a8f1d0b13e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0067ea61ac2abd75b17f906c13fd6879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2020-09-25更新
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4卷引用:吉林省长春市第二实验中学2020-2021学年高二第一学期开学考试数学试题
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6 . 已知向量
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013b1423e5cff4d3f20c6346a100e4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc66cd5ccd5a579a42c6a241c62d764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780cba61bee49b5b5c51390969741a69.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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昨日更新
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5卷引用:吉林省长春市2024届高三下学期三模数学试题
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7 . 已知向量
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c8619899809fd36f803f61c7a2f4347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a435c180bd1fd0e5a8349c46605529.png)
A.![]() | B.![]() ![]() |
C.![]() ![]() ![]() ![]() | D.![]() ![]() |
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2021-10-27更新
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2卷引用:吉林省吉林市桦甸市第四中学2021-2022学年高三上学期10月月考数学(理)试题
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解题方法
8 . 已知向量
,与向量 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fea9bf6b20c583ae6e7c022e2e18996.png)
(1)当
为何值时,
;
(2)当
时,求向量
与向量
的夹角;
(3)求
的最小值以及取得最小值时向量
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6569e50f43b3d8645652ecc13b62066e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fea9bf6b20c583ae6e7c022e2e18996.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6c21f7f79d2b0e91a843d2177afb3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
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2020-06-04更新
|
630次组卷
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5卷引用:吉林省长春外国语学校2020-2021学年高一下学期期中数学试题
吉林省长春外国语学校2020-2021学年高一下学期期中数学试题北京市西城外国语学校2019-2020学年高一第二学期诊断性测试数学试题四川省江油中学2019-2020学年高一下学期第三次月考数学试题(已下线)6.3.2 平面向量数量积的坐标表示(精练)-2020-2021学年高一数学一隅三反系列(人教A版2019必修第二册)北京市顺义区第一中学2020-2021学年高一下学期期中数学试题
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解题方法
9 . 已知向量
,
,
,
,设
的夹角为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe477d7cc5f24f27d3ed9709e6def92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049724eb5ebb695bc72918b71ab82135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91f7faeafc8727ba026c06e3b57bbe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9ff263ce98ed057ee7ea648c56a4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 已知向量
,
.
(1)当
为何值时,
与
垂直?
(2)若
,
,且
三点共线,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cfe95943d81da9781dc294d84b2caa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5d5e0dc1ba9aabb4df9f9787dbcd3b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc33615aeafc766e79b59018d772990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7671635de5bc7a158773def4dafa6508.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adcd916371218a1f8481815fa8563142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73ec1ef0df40ceea904fcd16ca6800e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
您最近一年使用:0次
2019-09-13更新
|
885次组卷
|
5卷引用:吉林省吉林市桦甸市第四中学2018-2019学年高一下学期期末数学试题