名校
解题方法
1 . 在
中,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461ef04ee09fb6f95e4d3db3cfce8fe0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 如图,在
中,M为线段
的中点,G为线段
上一点,
,过点G的直线分别交直线
,
于P,Q两点,
,
,则
的最小值为( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/509d226c-b8e1-4657-b949-b9cc2b8d0240.png?resizew=127)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ef61a6ecb410736f56322dada8bf3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5c9e3ea35e3b6a405b996ce3a937cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c2e685c602c27009a87cb84040fbdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67a4d5d12c72101550c5845c867e2e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/509d226c-b8e1-4657-b949-b9cc2b8d0240.png?resizew=127)
A.![]() | B.![]() | C.3 | D.9 |
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2023-05-18更新
|
3355次组卷
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13卷引用:陕西省渭南市韩城市2022-2023学年高一下学期期末数学试题
陕西省渭南市韩城市2022-2023学年高一下学期期末数学试题湖北省武汉市武昌区2023届高三下学期5月质量检测数学试题山东省临沂市临沂第十九中学2022-2023学年高一下学期6月月考数学试题湖南省长沙市实验中学2023届高三三模数学试题云南省云天化中学教研联盟2022-2023学年高一下学期期末考试数学试题(已下线)专题04 不等式与不等关系(解不等式、基本不等式、线性规划、比较大小)(已下线)第一节 平面向量的概念及线性运算 B素养提升卷江西省南昌市南昌县莲塘第一中学2024届高三上学期10月质量检测数学试题(已下线)第01讲 平面向量的概念、线性运算及坐标表示(六大题型)(讲义)(已下线)第13讲 拓展一:平面向量综合问题-【帮课堂】(人教A版2019必修第二册)(已下线)专题09 平面向量小题(已下线)专题5.1 平面向量的概念、线性运算与基本定理及坐标表示【六大题型】广东省高州市2023-2024学年高一下学期3月月考数学试题
名校
解题方法
3 . 如图所示,F为平行四边形
对角线BD上一点,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/4858de36-ee0d-49af-a292-b1d2ef3e346a.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a746c5260e1643860233739c23a86af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e68028d33ab8a11b4cd40ecfdd253b1d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/4858de36-ee0d-49af-a292-b1d2ef3e346a.png?resizew=166)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-05-12更新
|
839次组卷
|
5卷引用:陕西省渭南市大荔县2022-2023学年高一下学期期末数学试题
名校
解题方法
4 . 大约在公元222年,赵爽为《周髀算经》一书作序时介绍了“勾股圆方图”,亦称“赵爽弦图”(如图1).某数学兴趣小组类比“赵爽弦图”构造出图2:
为正三角形,
,
,
围成的
也为正三角形.若
为
的中点,①
与
的面积比为___________ ;②设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e507d3941363e9dbeac8be35134727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/c1bd98f1-c926-4719-b25c-602039f53dd5.png?resizew=272)
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2023-05-05更新
|
1791次组卷
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4卷引用:陕西省西安市长安区第一中学2023-2024学年高二上学期假期学情检测(入学考试)数学试题
名校
解题方法
5 . 在平行四边形
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c397bc7f7b3de2c8182c3fbe94fd5ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9d86315677a86bb4dc09d06310f3f1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-04-29更新
|
692次组卷
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4卷引用:陕西省安康中学2023届高三下学期4月质量监测文科数学试题
名校
6 . 如图,已知点
是
的重心,若
过
的重心
,且
,
,
,
(
,
),试求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/45951baeeddf72cbefcb486e4f0abf37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b635af568cb17f99d4bded23beccd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32043a653eba02c79ae6395b3bcb34f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/15/a1277697-9abb-4586-8659-e6239a60ba13.png?resizew=141)
您最近一年使用:0次
2023-04-13更新
|
1158次组卷
|
10卷引用:陕西省西安市铁一中学2022-2023学年高一下学期期中数学试题
陕西省西安市铁一中学2022-2023学年高一下学期期中数学试题(已下线)模块一 专题2 平面向量(1)(北师大版)(已下线)专题1 平面向量 (1)(已下线)模块一 专题1 平面向量(苏教版)6.2.3向量的数乘运算练习(已下线)专题02 平面向量的运算(八大考点)-【寒假自学课】(人教A版2019)(已下线)6.2.3向量的数乘运算【第二练】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)专题02 平面向量的运算(题型专练)-2《知识解读·题型专练》(人教A版2019必修第二册)(已下线)9.2 向量运算1-【帮课堂】(苏教版2019必修第二册)(已下线)第04讲 6.2.3向量的数乘运算(1)-【帮课堂】(人教A版2019必修第二册)
名校
解题方法
7 . 在△ABC中,
,
,D是AC边的中点,点E满足
,则
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3976d08e5f9e24e76ce9579c06a8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b20c8f0104733b428d6d0ca3cff89b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0735144f6e24b6b32028ff14c17c1cec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4781e3daa2c4e018ca0ae09bb56abc0f.png)
A.60° | B.75° | C.90° | D.120° |
您最近一年使用:0次
2023-04-05更新
|
1100次组卷
|
4卷引用:陕西省西安市铁一中学2022-2023学年高二下学期第3次月考理科数学试题
解题方法
8 . 在平面直角坐标系
中,过点
的直线
与圆
交于
,
两点,若存在直线
,使得
,则半径
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889a5e04c5187fb20415a59ce6adeed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1410414ebd007a6aebfb75240e2b458f.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b4ca1e0ba0d92cd2f3c8f28a85dca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 如图,在直角梯形
中,
,
与
交于点
,
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/f737ce8b-6683-4b95-a648-dbc183dfda38.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3ac3a23bf91b117707ec6d6263936c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/f737ce8b-6683-4b95-a648-dbc183dfda38.png?resizew=134)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-03-28更新
|
798次组卷
|
5卷引用:陕西省西安市第八十三中学2022-2023学年高一下学期期中数学试题
解题方法
10 . 在
中,已知
是
边上一点,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7bf9332e1e502ce0dcfd28def496c88.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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