名校
解题方法
1 . 在
中.已知
是
延长线上一点.点
为线段
的中点.若
.且
.则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/8fcc87c6-f2a6-472d-abc3-9ccfc8986b99.png?resizew=154)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/da08fee1320e4de21ed3af82e786f0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab0da1f5cb58534bb59d7c9a85d4d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/8fcc87c6-f2a6-472d-abc3-9ccfc8986b99.png?resizew=154)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-29更新
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13卷引用:江西省靖安中学2020-2021学年高二上学期第一次月考数学试题
江西省靖安中学2020-2021学年高二上学期第一次月考数学试题山东省烟台市第二中学2019-2020学年高一下学期3月月考数学试题天津市宝坻区大钟庄高级中学2019-2020学年高一6月月考数学试题山西省朔州市怀仁一中云东校区2020-2021学年高二9月月考数学(文科)试题新疆乌鲁木齐市第八中学2019-2020学年高一上学期第三阶段考试数学试题黑龙江省大庆市大庆中学2018-2019学年高一下学期期中数学(理)试题天津市第七中学2019~2020学年高一下学期期中考试数学试题浙江省丽水市发展共同体2019-2020学年高一下学期期中数学试题陕西省西安中学2020届高三下学期仿真考试(一)数学(理)试题宁夏石嘴山市第三中学2020届高三上学期第一次适应性(开学)考试数学(理)试题(已下线)第10练 平面向量线性运算,坐标运算-2021年高考数学一轮复习小题必刷(山东专用)(已下线)考点56 平面向量的线性运算及基本定理(练习)-2021年高考数学复习一轮复习笔记(已下线)模型1 平面向量几何意义的应用模型(高中数学模型大归纳)
名校
2 . 如图,在
中,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/27347cbf-d7cc-4d53-993c-ca2462667d48.png?resizew=163)
(1)若
求
的值;
(2)若非零向量
求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c43492b3b82e0b5fb2a7ec99e7fd1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63bab38878b2f2a9cf6d7db6659cb51.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/27347cbf-d7cc-4d53-993c-ca2462667d48.png?resizew=163)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63d92e5897f845cde4ca69c38ff583c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若非零向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fcd03d0fef6030cb57053f62052a5a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfd448fc425746173210ab9299d05cd.png)
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2019-12-02更新
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2卷引用:江西省莲花中学2020-2021学年高一下学期第一次月考数学试题
名校
3 . 已知
的垂心为
,且
是
的中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa966c6bca068703c8656a8978457ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820123d50de68f51cae9034db9bc3542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa966c6bca068703c8656a8978457ae.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-09-23更新
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680次组卷
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6卷引用:2019年江西省南昌市高三上学期开学考试数学(理)试题
4 . 已知
中,
,
,
的中点为
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51c70ed26bb56ec506175e6c9879e0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3a059203f65774fd8f321faa9e8041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dde64a49e40cfbfa693ac84196c9331.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2卷引用:2019年江西省南昌市高三上学期开学考试数学(文)试题
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5 . 已知等差数列
,满足
,其中
,
,
三点共线,则数列
的前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11e2bf8d65c24fc845446a32d881bd4.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d3c0f812c6a5ecdc59de165030ccc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11e2bf8d65c24fc845446a32d881bd4.png)
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3卷引用:江西省赣州市大余县新城中学2019-2020学年高二上学期第一次月考数学试题
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6 . 如图,在
中,
,
是线段
上一点,若
,则实数
的值为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7353f4839acdd051bafaeb37f4d5cafb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e072b35b370c78b8aca5cdcc6d7463b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/d92bf7a2-581d-4a78-9399-ed74f33e2f8c.png?resizew=120)
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7卷引用:江西省宜春市第九中学2020-2021学年高一下学期第一次月考数学试题
名校
7 . 如图,在
中,
,
,
为
上一点,且满足
,若
的面积为
,则
的最小值为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/41252127-5a53-4a11-b29b-bab4acd06958.png?resizew=186)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d11a5a756d8fdd7b294c4f5fd63467b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d108b286a74d2cdf3158022040dd8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31b77a8b0e3b438c8707f9dbeb544c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac4e3f9c6c33142521b5ad1e821c90e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/41252127-5a53-4a11-b29b-bab4acd06958.png?resizew=186)
A.![]() | B.![]() | C.3 | D.![]() |
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2019-02-13更新
|
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19卷引用:江西省抚州市临川第二中学2018-2019学年高一下学期第一次月考数学试题
江西省抚州市临川第二中学2018-2019学年高一下学期第一次月考数学试题江西省奉新县第一中学2020-2021学年高二上学期第一次月考数学(理)试题【全国百强校】天津市第一中学2019届高三下学期第五次月考数学(文)试题2020届山东省济宁市第一中学高三下学期二轮质量检测数学试题福建省泉州科技中学2022届高三上学期第一次月考数学试题山东省菏泽市郓城县第一中学2021-2022学年高一3月阶段性检测数学试题【市级联考】安徽省黄山市2019届高三第一次质量检测(一模)数学(理)试题【省级联考】浙江省2019届高考模拟卷(一)数学试题【区级联考】天津市南开区2019届高三下学期一模考试数学(理)试题【区级联考】天津市南开区2019届高三下学期模拟考试数学(理)试题【区级联考】天津市南开区2019届高三第二学期模拟考试(一)数学(文)试题(已下线)第十一篇基本不等式02—2020年高考数学选填题专项测试(文理通用)(已下线)第6 篇—— 平面向量及其应用, 复数-新高考山东专题汇编(已下线)第2篇——相等关系与不等关系,计数原理-新高考山东专题汇编(已下线)专题08 平面向量-2021年浙江省高考数学命题规律大揭秘【学科网名师堂】(已下线)第17练 平面向量的基本定理及坐标表示-2021年高考数学(文)一轮复习小题必刷(已下线)第18练 平面向量的基本定理及坐标表示-2021年高考数学(理)一轮复习小题必刷(已下线)专题5-2 向量线性运算及四心综合归类-4浙江省杭州市第九中学2021-2022学年高一下学期期中数学试题
解题方法
8 . 在正方形
中,
是
的中点,且
,函数
,的图象为曲线
,若曲线
存在与直线
垂直的切线(
为自然对数的底数),则实数
的取值范围是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcd4ad6a0ef1705c9b20aa7f9b0392b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55cdf23ae179803e7d7dde2dbb1b07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695fc90e2536e2c37115758dc79fe160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-01-30更新
|
72次组卷
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2卷引用:2016届江西省吉安一中高三上学期第四次周考文科数学试卷
解题方法
9 . 在
中,点
满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7990349c87017f2ca70ec5d462b311b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5960fe3e9c56c7aaffc6129ac387a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450743dbe1916012643039cd87a72263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7990349c87017f2ca70ec5d462b311b.png)
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2018-11-06更新
|
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3卷引用:【校级联考】江西省抚州市七校2019届高三10月联考数学(理)试题
名校
10 . 如图,在
中,
,
,
与
交于点
,设
,
,
,则
为( )
![](https://img.xkw.com/dksih/QBM/2018/8/30/2021498338902016/2039946680975360/STEM/8169dadffeea449fb761513f3ea9d7a4.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f855c80172c04310d342f82d960011ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553a93e0b6156befa00b50bdfaef95d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/b19728729b1bdfddbb52e6af0c43cbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://img.xkw.com/dksih/QBM/2018/8/30/2021498338902016/2039946680975360/STEM/8169dadffeea449fb761513f3ea9d7a4.png?resizew=130)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-09-25更新
|
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2卷引用:江西省信丰中学2018-2019学年高二上学期第一次月考数学(文)试题