1 . 在
中,D是线段AB上靠近B的一个三等分点,E是线段AC上靠近A的一个四等分点,
,设
,
.
(1)用
,
表示
;
(2)设G是线段BC上一点,且使
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6627afe17dd2d6019227740c44fb61b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9acf097256577c43c8a4ab4402e0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27749aac785e0fb2e668a5292d19b64f.png)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f1a8e551cba7ec9f451749f60e628d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b8a2a41a8b50e10d68943e3f0f4e05.png)
(2)设G是线段BC上一点,且使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33844f893ac303642545457e46241861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f074703bddae03174e9537fa46e217.png)
您最近一年使用:0次
12-13高一上·吉林长春·期末
名校
解题方法
2 . 如图所示,设
是
三边上的点,且
,
,
,若
,
,试用
将
表示出来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9369aed2d8309af46ac3eaffb9cce537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530d80361a098d127839f8a581955a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b94fc8dd87d543c27624771075062fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728e5d9f46f87f6693261ebc41c7abcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7a93a1399ff7a2bde342652479241b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae92f0c583cc9daf980a8621ad96aef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbdc2c08884512c706e2b377ce2148bc.png)
您最近一年使用:0次
2021-04-21更新
|
319次组卷
|
6卷引用:广西柳州市第三中学2023-2024学年高一下学期3月月考数学试卷
广西柳州市第三中学2023-2024学年高一下学期3月月考数学试卷(已下线)2011-2012学年吉林省长春外国语学校高一上学期期末考试数学试卷人教A版(2019) 必修第二册 突围者 第六章 第三节 课时1平面向量基本定理(已下线)6.3.1 平面向量基本定理(分层练习)-2020-2021学年高一数学新教材配套练习(人教A版2019必修第二册)(已下线)【新东方】在线数学116高一下(已下线)6.3.1 平面向量基本定理-【师说智慧课堂】限时作业(人教A版2019)
名校
3 . 已知点
,
为坐标原点.
(1)若
,求
的值;
(2)若实数
满足
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b0b48f87b1cf5d25b590c60fa3dfb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12119a418505ce8c190c575a6de38bff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a080cab44a7d3605430d67b207f9be.png)
(2)若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ab8d9ec70b87c38a978f43d012eff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ccb9e2ad02134176b62c4b4b9b6cd92.png)
您最近一年使用:0次
2017-07-25更新
|
512次组卷
|
3卷引用:【全国百强校】广西河池市高级中学2017-2018学年高一下学期第三次月考数学试题