1 . 已知
内一点
是其外心,
,且
,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf623a808eaaef1acef2bd44d92d34a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed01d6c72e77fa39656af0333cc252d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
您最近一年使用:0次
名校
解题方法
2 . 已知
的内角
的对边分别为
,且
.M为
内部的一点,且
,若
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5f33fd9ec988aaddd8f4c82f960c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152159669524d6c6708fca852b40bfa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5903e9380cfeeed8b471005a75b97d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-29更新
|
2718次组卷
|
7卷引用:上海市青浦区2019-2020学年高二上学期期中数学试题
名校
3 . 已知O是
所在平面上的一点,角A、B、C所对的边分别为a,b,c,若
(其中P是
所在平面内任意一点),则O点是
的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a81748ea32461da0993d282c52e842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
A.外心 | B.内心 | C.重心 | D.垂心 |
您最近一年使用:0次
2019-12-11更新
|
4743次组卷
|
6卷引用:上海市七宝中学2019-2020学年高二上学期期中数学试题
上海市七宝中学2019-2020学年高二上学期期中数学试题(已下线)第8章 平面向量(章节压轴题专练)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)(已下线)考点58 平面向量的应用(讲解)-2021年高考数学复习一轮复习笔记(已下线)专题12 平面向量综合必刷100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)(已下线)第07讲 平面向量的奔驰定理与四心问题(已下线)【练】 专题六 平面向量与三角形四心问题(压轴大全)
4 . 在
,若
,且
,则
的形状为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb1f8e19214485831bbe95d3a68c1ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ec4e396cae9d36d48acecbedac434b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.直角三角形 | B.等腰三角形 | C.等边三角形 | D.无法判断 |
您最近一年使用:0次
5 . 定义:若对于非零向量
、
、
,同时满足:①
②
与
不平行③
与
与的夹角,
与
的夹角大小相等,则称向量
、
关于向量
对称.
(1)判断
,
,是否关于向量
对称,说明理由
(2)对于非零向量
、
、
,若
、
关于向量
对称,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f3bdb62d54227999dab3761453c755b.png)
(3)若点P在一次函数
的图像上运动,
与![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2553d03bee09627e1029d57ac3cd11d.png)
关于向量
对称(其中O为坐标原点),求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0674386f0d1fcf53da104626f2da95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf63f7acaad3885c57512a39f4865756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b96e01cb3d858af314183de347c56ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85e22f873d48d5b46cf4dbd32163a89.png)
(2)对于非零向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f3bdb62d54227999dab3761453c755b.png)
(3)若点P在一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82973c2b6d1c407318545f1c0f32ec2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2553d03bee09627e1029d57ac3cd11d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a15534d805bcf37d4b8187def1cecd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e563690aaf76512fbf76513554c8a12.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/ab55bd6b-2f2f-4098-9aa8-527e5795e38d.png?resizew=138)
您最近一年使用:0次
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6 . 已知点P为ABC内一点,
,则△APB,△APC,△BPC的面积之比为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e00387fbb940e8c63235952e8423260.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-11-08更新
|
3044次组卷
|
9卷引用:上海市新川中学2019-2020学年高二上学期第一次月考数学试题
上海市新川中学2019-2020学年高二上学期第一次月考数学试题(已下线)第8章 平面向量(章节压轴题专练)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)专题02 向量的数乘运算、数量积(核心素养练习)-【新教材精创】2019-2020高一数学新教材知识讲学(人教A版必修第二册)-《高中新教材知识讲学》四川省三台中学2019-2020学年高一4月空中课堂质量检测数学试题广东省河源市龙川宏图学校2021-2022学年高一下学期月考(二)数学试题(已下线)专题4 向量综合归类(讲+练)-2内蒙古呼伦贝尔市满洲里市第一中学2022-2023学年高一下学期期末考试数学试题(已下线)大招4 奔驰定理(已下线)专题4-2向量四心及补充定理综合归类-1
名校
7 . 已知平面内n个不同的单位向量
、
、…、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b0d5f1888f4a8de95669bb346d28de.png)
,且n边形
为凸多边形.
(1)当
且
时,求证:三角形
是正三角形;
(2)记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc92bf3b4483312b295837e5c1a678b.png)
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f376a1499ca704cd75e784168906d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d04ad1b2b2895053231d5351ed9e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b0d5f1888f4a8de95669bb346d28de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858560a454ee63031b0a60ee1831a1cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d69385c313b7733f3081e9711a40abef.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b09493c8edbcc83b5213bc0104f4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56448a74c1b8430c425d79d626764f4f.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc92bf3b4483312b295837e5c1a678b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858560a454ee63031b0a60ee1831a1cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad988ed8409a9be8f9c4e4eb91c2e141.png)
您最近一年使用:0次
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8 . 平面直角坐标系xOy内,点
,动点
和Q关于原点O对称,
,
.
(1)以原点O和点A为顶点作等腰直角三角形ABO,使
,求向量
坐标;
(2)若
且P、M、A三点共线,求
的最小值;
(3)若
,且
,
,求直线AQ的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40630a669f4eedf626bc24851df10c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8293156150e4eb50a1bdd71090917dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)以原点O和点A为顶点作等腰直角三角形ABO,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96d9e134e1820d80612be1bc590993e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329fdf7d989f77a32ca9e0361a9cc956.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881a9727fa891bd80ac7c64abb0518ab.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9703534eceb8ccbfebb7a4510d5530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98bbff91df26858f512a572c81907716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36753c437b2799a0afa028ae919f8b4c.png)
您最近一年使用:0次
名校
9 . 设点
在以
为圆心,半径为1的圆弧
上运动(包含
、
两个端点),
,且
,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/cb52884209c1cce0b20a26d1a5e6024a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa33e1fb59b317c9592546c096d5f050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0de15bb22c48b921ddcaaf4c2b9531.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/02e5e070-1289-4c79-bf83-5853ff0cf9d2.png?resizew=152)
您最近一年使用:0次
2019-10-23更新
|
1294次组卷
|
4卷引用:上海市交通大学附属中学2019-2020学年高二上学期9月月考数学试题
上海市交通大学附属中学2019-2020学年高二上学期9月月考数学试题2019年上海市奉贤区高三4月调研测试(二模)数学试题(已下线)课时27 平面向量的分解定理及应用-2022年高考数学一轮复习小题多维练(上海专用)(已下线)第一次月考填空题压轴题十四大题型专练-举一反三系列
名校
10 . 已知平面直角坐标系内三点
、
、
在一条直线上,满足
,
,
,且
,其中
为坐标原点.
(1)求实数
、
的值;
(2)设△
的重心为
,且
,且
、
为线段
的三等分点,求
的值.
![](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/4eb51f374a4aee4cc95fd2b3c3344cbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d22bf4fcc6bb6bd9d9469ecadc1a89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b67e638c2dd877db7d545aa36afd2b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fb74745f1d6a291a7422feb93c27dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)设△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed01d1ff5a7f21a68fb3a1e5c7f393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d33acc02939f422f3e1006225bcd8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8f54b4af1c304bf8f2b003aed928695.png)
您最近一年使用:0次
2020-01-03更新
|
507次组卷
|
2卷引用:上海市七宝中学2018-2019学年高二上学期期中数学试题