1 . 软木锅垫的正、反面可加置印刷公司logo、图片、产品、广告、联系方式等,表面较强的摩擦力既可以防止玻璃、瓷杯滑落,又可保护桌面不被烫坏.如图②,这是一个边长为20厘米的正六边形的软木锅垫
,则下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
A.向量![]() ![]() ![]() |
B.![]() |
C.![]() |
D.点![]() ![]() ![]() |
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182次组卷
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2卷引用:山东省济宁市兖州区2023-2024学年高一下学期期中质量检测数学试题
名校
解题方法
2 . 在
中,点
分别在边
和边
上,且
交
于点
,设
.
表示
;
(2)点
在边
上,且满足
三点共线,试确定点
的位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6479a7faaf069b1661464e5d416fb66e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64cb1b3fd335f345ab43ac7dd068d507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7670db79a4056f1517fe8c3f49c014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1a53ed9b8cefcf3be52f4ecfd69777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a6c1c4db24778071a7c48c6e4587f9.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a48e7710d3d3e8cc1152fdc9c7b74a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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名校
解题方法
3 . 如图,已知点
是
的重心,过点
作直线分别与边
交于
两点(点
与点
不重合),设
.
的值;
(2)求
的最小值,并求此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe143dec02c6f99e7b30ecee108ca21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b7e12253044b5abff2a56dcd730ced8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
您最近一年使用:0次
名校
4 . 已知向量
.
(1)若
,求实数
的值;
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a414c99085f64a01c1331fe231016e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f280f438c5f81d59d249276a1ecf5524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46547c2102baf9d3af265444df931edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
解题方法
5 . 已知非零向量
,
不共线,且
,若
,则x,y满足的关系是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c84d34f931611e1b0e70b74132a3a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b925819f07ec85e3d94e0eedfaf0558b.png)
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名校
解题方法
6 . 已知向量
.
(1)若
,求
的值;
(2)若
.
①求
与
的夹角
的余弦值;
②求
在
的投影向量
③求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/376bf07c9fa02712d8661de95b59b44a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60e2180220297601db28850e5122807.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
③求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00212b47f47f073833c3001b3463ac7.png)
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名校
解题方法
7 . 在
中,
是
的中点,
在
上,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c397bc7f7b3de2c8182c3fbe94fd5ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9769839f35c2b7002b9f5e62f40b34de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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282次组卷
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4卷引用:重庆市四川外国语大学附属外国语学校2023-2024学年高一下学期期中考试数学试题
重庆市四川外国语大学附属外国语学校2023-2024学年高一下学期期中考试数学试题(已下线)专题01 向量基底、四心及其应用(1)-期末考点大串讲(苏教版(2019))云南省部分校2023-2024学年高一下学期月考联考数学试题河南省南阳市2023-2024学年高一下学期5月阶段检测考试数学试题
解题方法
8 . 在等腰梯形
中,
,
,
,
.
与
垂直,求
的值;
(2)若
为
边上的动点(不包括端点),求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4aa43d2e64e857267e706e1f50f5c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d01872723102269f05c9d1b77c6e34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/405eedd8483df63eab469ef47c077ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88110a41c498a765c88161d0c3d6c705.png)
您最近一年使用:0次
9 . 如图,
,
,线段
,
相交于点
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18bf5477ab809cf5b133a045b0ea8e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79b194152945f719c21bbe5d525338d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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名校
解题方法
10 . 在
中,内角A,B,C的对边分别为a,b,c,BC,AC边上的两条中线AM,BN相交于点P.
,
,用
,
表示
;
(2)证明:
;
(3)若
,
,
,求∠MPN的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc03a3ba496faee748a8d63e5d4fa92.png)
![](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/f7239b3f2d88c2e45e17e5de9ae1a332.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad18017b1c4f15f274f44bd4410a8b07.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
您最近一年使用:0次