如图所示,在
中,点
是边
的中点,点
是线段
靠近
的三等分点.过点
的直线与边
分别交于点
.设
,其中
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/0c56b104-f286-46a0-bf42-dadadc691fde.png?resizew=198)
(1)试用
与
表示
,写出过程;
(2)求证:
为定值,并求此定值.
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff07b580b7fda7aa2995b47be8154b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c041778516896f7b94a3e9bd8e5507cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/0c56b104-f286-46a0-bf42-dadadc691fde.png?resizew=198)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89265cbe3abc6b966ce8967fead448b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4d994cd5b51f0f50671d29999ed038.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
22-23高一上·北京·期末 查看更多[4]
(已下线)北京市北京亦庄实验中学2022-2023学年高一上学期第2学段教与学质量诊断(期末)数学试题(已下线)高一数学下学期第一次月考03(范围:必修二第一、二章平面向量+复数)(已下线)专题训练:用已知向量进行线性表示-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)辽宁省朝阳市建平县实验中学2022-2023学年高一下学期4月月考数学试题
更新时间:2023-01-21 15:56:47
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适中
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解题方法
【推荐1】如图,在
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe167adc992dfec751de5060994ae8f.png)
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适中
(0.65)
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解题方法
【推荐2】已知
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,
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![](https://img.xkw.com/dksih/QBM/2020/8/25/2535627724193792/2538880101646336/STEM/7cc14060bcb240a08636777044ef7c74.png?resizew=201)
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(2)过点
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,且满足
,
,求
的值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5749d8fa83fd399d9f991ef4c2d2ce44.png)
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
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您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐1】如图,在
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,
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(1)求
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(2)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301967dd77e7e95240f6fdfb03d108b8.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/5/7236dc02-e653-4b5a-b783-729bdfacd080.png?resizew=185)
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(2)求
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您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】
中,已知
,点
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上,
.
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;
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c33d7005b5818c4cb34cea35ea2bee08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3b17b8fc84b128c9947531269a5401.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01476dfb5970e27f54f742c27b9515f9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc5c4b886a48affa3e6103f7e4c2bfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐3】如图,在
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(3)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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