如图,在
中,
分别为
的中点,
为
与
的交点,点
在
上,且
.设
.
(1)求
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec38bedb55b02c42c1fb552e6cbf7a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cca04b2a2b61d62a809776670a60c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79b194152945f719c21bbe5d525338d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b71148b225e163005059d19675d5f6b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/ed51a36a-65f0-4cd6-aa91-bb54e30b76c4.png?resizew=156)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68e4de3cb03cd4c55fb031de5c063966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf8aa0d8a2f2cc0e3ad0020dcfc6df4.png)
22-23高一下·重庆·期末 查看更多[3]
更新时间:2023-07-03 19:14:00
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【推荐1】平面内给定三个向量
.
(1)求
;
(2)求满足
的实数m和n;
(3)若
,求实数k.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d5adbcde601b3434f3f9c1f78e67b2d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4157fcaf52a3d1c674c952ac03b64a.png)
(2)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da9d94ef5b14a65b9a0eeeac5b912fa.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11583d218b21c6e9aa3c6ec0406d3b44.png)
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【推荐2】在复平面内,正方形
的两个顶点
、
对应的复数分别为
、
,求另外两个顶点
、
对应的复数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b80360cbdda38f0745b998dfa872a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e43145e8b838e2214d3b235f97faf75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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【推荐3】平面内给定三个向量
,
,
.
(1)求满足
的实数m、n;
(2)若
,求实数k;
(3)若向量
满足
,且
,求
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/869b1c04fd90a2420a415d1aa1ef8120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2555bb24d9abc9551b1de8deffea3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81f304dda2966fbe3bcc66908c6c1b0.png)
(1)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da9d94ef5b14a65b9a0eeeac5b912fa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8622f3b48b4c0d1d389b9915073539.png)
(3)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec655f610928ca21831e26645a21e99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfaa4853e7aab60c1b7bc6d6859d9b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a460d6d9126d7a22fa4a81cd5cba7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec655f610928ca21831e26645a21e99c.png)
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【推荐1】如图,在平行四边形
中,
,
,
,
分别为
,
上的点,且
,
.
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/8fe97cef3dba462eb9d6b2906e5eca90.png?resizew=249)
(1)若
,求
,
的值;
(2)求
的值;
(3)求
.
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/74a4ddb792bd41799862742ee21ac63a.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/48ae90b591e943f58e7ed37dcc4247c2.png?resizew=51)
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/66159e01518843ec831ea005651a65d8.png?resizew=52)
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/297ab8b61bff4c21b0812edf5bffd064.png?resizew=76)
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/ecc5c391648c4f119e6601d760814113.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/cc74de8efb07488081c0c8b715c55a24.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/6c9abf861daf4f40b8e5016a6f4b2fb0.png?resizew=26)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02c25b95e61557eec096de150ab873f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0ce7aaca2b6725dac7ed5d2a437aa1.png)
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/8fe97cef3dba462eb9d6b2906e5eca90.png?resizew=249)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8569080c33a1d9af606a8b909ddb5128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)求
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752552459943936/1752881316757504/STEM/775a415b4de64a87bd79cd8dce406bda.png?resizew=53)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042d8a22d40558df253164145f6c2043.png)
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【推荐2】如图在五边形
中,
,
,
.
(1)求线段
的长;
(2)设
,
的面积记为
,则有
,求
的表达式,并求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503b66ccfec6d1c5146af2f34c25cc4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f387789e86d316ab9353c10055644f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d32df821a5e3a06969d75f5548aa95.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/8/6970a54b-56b7-445f-a585-c9757e641cf4.png?resizew=179)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9ab5a9114daaa0fd3f6c5f1885f90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef8d61d4512b8453219a15c9bd4425b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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【推荐3】对任意两个非零向量
,
,定义:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2880d03a4fe19b30857292e07a7bb29d.png)
(1)若向量
,
,求
的值;
(2)若单位向量
,
满足
,求向量
与
的夹角的余弦值;
(3)若非零向量
,
满足
,向量
与
的夹角是锐角,且
是整数,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7a1df960feef63dec4790d63f52279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2880d03a4fe19b30857292e07a7bb29d.png)
(1)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dba6c7eb6216014862640716991326a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22249dd883332a917ec68eaf7dd5ea23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2eb893d1367e26f4388ae4280f78630.png)
(2)若单位向量
![](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/dcb0319e46d3d669c9439537e600c461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bca35e52b8430246a1cf96e9e617cce.png)
(3)若非零向量
![](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/aaaa5755983415a0dd11a44c4f426efa.png)
![](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/189301a0467dfa2daf6b5806d15bfa22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09dd1004f81418675f8cfac07219d59c.png)
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【推荐1】已知平行四边形
中,E是
的中点,F是
边上靠近点B的三等分点,
与
交于点M,
,设
,且
.
(1)用
表示
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf80b036459da6dcb841a4bbe3859fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1aa922b038bd7247741f895e192568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d973a446723058aa19f043785c531c09.png)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae54940f33b8714da5fe3b7546f8b3dc.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b89403a4db68423b83136d2cbff6225.png)
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【推荐2】类似于平面直角坐标系,定义平面斜坐标系:设数轴
、
的交点为
,与
、
轴正方向同向的单位向量分别是
、
,且
与
的夹角为
,其中
,由平面向量基本定理:对于平面内的向量
,存在唯一有序实数对
,使得
,把
叫做点
在斜坐标系
中的坐标,也叫做向量
在斜坐标系
中的坐标,记为
,在平面斜坐标系内,直线的方向向量、法向量、点方向式方程、一般式方程等概念与平面直角坐标系内相应概念以相同方式定义,如
时,方程
表示斜坐标系内一条过点
,且方向向量为
的直线.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/2b0a0ca8-36dc-4098-9e3d-1d33c5a4b485.png?resizew=232)
(1)若
,
,
,求
;
(2)若
,已知点
和直线
;
①求
的一个法向量;
②求点
到直线
的距离.
![](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/1dde8112e8eb968fd042418dd632759e.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/dc1480988d26abda64d9a4d20674ab76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89cdb00326a922074494892c166aeefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1480988d26abda64d9a4d20674ab76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89cdb00326a922074494892c166aeefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055fc5978f4ffff3f4e42a320735f528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82973c2b6d1c407318545f1c0f32ec2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4e92ae4870c00d45d94cfab14adde7.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/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82973c2b6d1c407318545f1c0f32ec2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd73ed523ba1b0e056bb8156c8be061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72bf0fce80daad394f2a9d013829c5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26235c27eae412c929f54eb54f604165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c6d785c3c09b9df343499dc11cadaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ce2f5e22175e3ff8ab5e0afca58f9c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/2b0a0ca8-36dc-4098-9e3d-1d33c5a4b485.png?resizew=232)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72bf0fce80daad394f2a9d013829c5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9525cc7220141b548c9940a95a3abce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcedd5a0a6a416627d352564e8aac50e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a560b8ff794c12dc8d194bcd2e3f3554.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72bf0fce80daad394f2a9d013829c5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b2133a161a6d656c2e80b9fbb35f9c.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
②求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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