名校
1 . 在平行四边形
中,
,
,
,
是线段
的中点,
,
.
,
与
交于点
,
,求
的值;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbaccd578a43b2397c8bdd50592fa07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9621311d2323bbf59eaff8ae11c289e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192dec6518fe33e5cabc217714051d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28006d6fcbbdc4cec2ea47e27e9a5328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d6df06a5b85848dc4fa33327f8e07.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6b86735572c3e9cee5e60e749b3bb3.png)
您最近一年使用:0次
2024-04-26更新
|
326次组卷
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5卷引用:四川省内江市2023-2024学年高一下学期4月期中联考数学试题
名校
2 . 如图,在
中,
为
上一点,且满足
,若
则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3872f0b419ab4cb8dad9417d2a5a0116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ede009947359b4339f03c8fbb5e96c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44a477f0100d0d24a5bf27f0e23c436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59de90557a43f7a8902463d122e1bfa7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-24更新
|
1358次组卷
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7卷引用:四川省安宁河联盟2023-2024学年高一下学期4月期中联考数学试题
四川省安宁河联盟2023-2024学年高一下学期4月期中联考数学试题四川省仁寿第一中学校南校区2023-2024学年高一下学期5月月考数学试题(已下线)专题05 高一下期末考前必刷卷03-期末考点大串讲(人教A版2019必修第二册)(已下线)核心考点2 平面向量的数量积 A基础卷 (高一期末考试必考的10大核心考点)(已下线)专题3 以平面几何图形为背景的向量综合问题【练】(高一期末压轴专项)江西师范大学附属中学2023-2024学年高一下学期5月数学素养测试卷(已下线)【高一模块一】难度5 小题强化限时晋级练 (中等2)
名校
解题方法
3 . 在
中,角
,
,
的对边分别为
,
,
,点
,
,
分别位于
,
,
所在直线上,满足
,
,
(
,
,
).
是边长为3的正三角形,且
,求
;
(2)如图2,若
,
,
交于一点
,
①求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454845e47d30210e1052f288c04a3828.png)
②若
,
,
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05edc2270435e31e1c6246f2e73d319c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c730e8a8b00a42f640f47bdbe0ced2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b8c1e566d5c3d13d732e99b5214da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a609b7b505947a8a2f34fbed4b2208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d7ff5d48857835f5127cb41cd607bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc8047ecbb77a3c5f61ab430b2279f3.png)
(2)如图2,若
![](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/dad2a36927223bd70f426ba06aea4b45.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454845e47d30210e1052f288c04a3828.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea1abafdbaa3ed5568822c52ee19af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ef5a4055fb0bac59cc504a71735417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52dde258c86bc5af02e2eee95448d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fab7aa572678c1776345bcb4d622393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
您最近一年使用:0次
2024-04-23更新
|
749次组卷
|
4卷引用:福建省厦门第一中学2023-2024学年高一下学期第一次适应性训练(月考)数学试题
福建省厦门第一中学2023-2024学年高一下学期第一次适应性训练(月考)数学试题福建省厦门第一中学2023-2024学年高一下学期第一次适应性数学试题(已下线)模块五 专题五 全真拔高模拟(高一)(已下线)模块五 专题5 全真拔高模拟1(北师版高一期中)
名校
4 . 如图,在
中,
,点
满足
.
是线段
上一点,且
,求实数
的值;
(2)若
,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1371fe98a65d8ebd840c8d98346b6d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be878f5bdce9a3e9939a4ae743c803b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4879a4ce2bc66b7fe3e5ff2b3f3915f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe7a93172d308a58200e3c722fe1072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
您最近一年使用:0次
2024-04-22更新
|
915次组卷
|
5卷引用:安徽省淮南第二中学2023-2024学年高一下学期期中教学检测数学试题
名校
解题方法
5 . 在等腰梯形ABCD中,
,
,
,
,
,动点E,F分别在线段BC和DC上(不包含端点),AE和BD交于点M,且
,
.
(1)用向量
,
表示向量
,
;
(2)求
的取值范围;
(3)是否存在点E,使得
.若存在,求λ;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ef58be8708144272538ee427fb92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d03acb29a5812acad760d564d6c84be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fe419cc85c1801f6f1e9ec1d2682865.png)
(1)用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c3accb1b8a5479439beff4259660e3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7042c22468919ac8279ee70f25bd716.png)
(3)是否存在点E,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0063b15ff38b206337b587935ada99f0.png)
您最近一年使用:0次
2024-04-08更新
|
213次组卷
|
2卷引用:江苏省南通市区+通州区2023-2024学年高一下学期3月质量监测数学试卷
名校
6 . 如图所示,点P,Q分别位于边长为1的正方形
的边
上,
,记点
为
的外心,若
,则
的最大值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfbeb7390ee66d7b126812483a3152e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e13889db9188c455a3ac91f2f32cf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e91eeb57e4fc87e26efb7d371f6f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/3e27b6a2-e055-4518-ab68-58ca764a7e9b.png?resizew=150)
您最近一年使用:0次
名校
7 . 如图,在
中,
,点
是线段
上一点.
是线段
的中点,试用
和
表示向量
;
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23c10fcb4fe0ccc015f8bfc60744589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f9b6bbcfa5d591c2d41455ac2c1777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2024-04-04更新
|
474次组卷
|
3卷引用:四川省成都市列五中学2023-2024学年高一下学期阶段性考试(一)数学试题
名校
8 . 在
中,点
是
内一点,
,过点
的直线
交直线
分别于
两点,且
,已知
为非零实数.试求
的值.
(2)若
,且
,设
,试将
表示成关于
的函数,并求其最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc4fc0635e1651eb2d8caad240b859b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/c9cc092cab61924df0048df59637a720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2272838844227e6874f863f61e2f134b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb183aab96cdb1e25caabda59fb8fbb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39346db456e8935d6d95a14b1d50ccde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661f3c446093390a3be8fe5993c549c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c9d96d2dc0082bb375c3b0e7214bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d81674538e4af9b8d4946f48d940011.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
名校
9 . 如图:在
中,点
为边
上靠近B点的三等分点,过
的中点O作动直线
,分别交边
和边
于N,M两点,
,则
的最小值为_________
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/9f983a030292c18b81a131aeb99dc2af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32043a653eba02c79ae6395b3bcb34f.png)
您最近一年使用:0次
2024-03-25更新
|
768次组卷
|
2卷引用:重庆市南开中学校2023-2024学年高一下学期3月阶段测试数学试题
解题方法
10 . 已知
是边长为2的正三角形,
,
分别为边
,
的中点,则若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/2723320d45882202f81058c5ffd9b1cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
您最近一年使用:0次
2024-03-24更新
|
410次组卷
|
2卷引用:北京市中国农业大学附属中学2023-2024学年高一下学期3月月考数学试题