名校
1 . 已知
,
,
,点
在
内,且
与
的夹角为
,设
,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1181366d40666079a73496076c382f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e6e5f76722ffff5982d25bd20654d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19468abe1aa4e99874d13b8359ec7332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7195a0b5b59c9462b9faaf5a9fcfc6e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74cf83af1c68209ae44a084633d45065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0be44077d42cfffece905b1af13e000.png)
A.2 | B.![]() | C.3 | D.4 |
您最近一年使用:0次
2017-11-13更新
|
3247次组卷
|
13卷引用:【全国市级联考】江西省上饶市2017-2018学年高一下学期期末考试数学(理)试题
【全国市级联考】江西省上饶市2017-2018学年高一下学期期末考试数学(理)试题【全国百强校】甘肃省兰州市第一中学2018-2019学年高一5月月考数学试题【全国百强校】广西南宁市第三中学2018-2019学年高一下学期期中考试数学试题四川省宜宾市叙州区第二中学校2019-2020学年高一下学期第四学月考试数学(文)试题四川省遂宁市射洪中学2021-2022学年高一下学期第一学月考试数学试题广东省东莞市弘林高级中学2022-2023学年高一下学期3月月考数学试题湖北省鄂东南省级示范高中教育教学改革联盟2018届高三上学期期中联考数学文试题1湖北省鄂东南省级示范高中教育教学改革联盟2018届高三上学期期中联考数学文试题2河北省保定市2018届高三下学期第二次模拟数学(文)试题百师联盟2019届全国高三模拟考试(三)全国卷文科数学试题(已下线)考点27 平面向量基本定理和坐标表示、坐标运算(考点专练)-备战2021年新高考数学一轮复习考点微专题(已下线)专题5.2 平面向量的基本定理及坐标表示(精练)-2021届高考数学(理)一轮复习讲练测(已下线)专题5.2 平面向量的基本定理及坐标表示(精练)-2021年高考数学(文)一轮复习学与练
名校
2 . 在直角梯形
中,
,
,
,
,
分别为
,
的中点,以
为圆心,
为半径的半圆分别交
及其延长线于点
,
,点
在
上运动(如图).若
,其中
,
,则
的取值范围是
![](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/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee90881c743e2cff2e3128d6bdb86174.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fabfdd01766757a1536203164ee490f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3081a16d7bd80d0482d0167eda3fbd8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cefeddff52b02a43831beeb4bb6faa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b27efac6809a5bdd5c7893ed32e9ef8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-05-24更新
|
1406次组卷
|
3卷引用: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
3 . 在平面直角坐标系中,O为坐标原点,A,B,C三点满足
.
(1)求证:A,B,C三点共线;
(2)求
的值;
(3)已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6823f66e23b037fa84d0eefa84670b98.png)
的最小值为
,求实数
的值.
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/98439d10e1b84296b83b5bcbdde0da45.png)
(1)求证:A,B,C三点共线;
(2)求
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/d52510b21d5546aaa2ec5597279a170e.png)
(3)已知
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/7280c15b87f84e5cabafb74a54a69759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6823f66e23b037fa84d0eefa84670b98.png)
的最小值为
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/afe80ba5c6fa41daa7b11d84bacb3a06.png)
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/41cfd1b40a094a0c8f8fa2778508ab92.png)
您最近一年使用:0次
4 . 在平行四边形ABCD中,点E是AD的三等分点,AE=2ED,BE与AC相交于点F,若
=m
+n
(m,n∈R),则
的值为______ .
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572235016364032/1572235022376960/STEM/c1a65ec006ed4539bb54fe36943ebdc1.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572235016364032/1572235022376960/STEM/58ffa2f4dcfd4a0899d9dcfa9326d747.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572235016364032/1572235022376960/STEM/65f698a6b5464f919fa54eebec87813c.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572235016364032/1572235022376960/STEM/bf2dd30220434e4f91fbb08885cdb306.png?resizew=20)
您最近一年使用:0次
名校
5 . 设向量
,
,其中
,
,
为实数.
(1)若
,求
的最小值;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470955e0ba462ec27e4ecf289d0e26af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b6222f2dff66ce212acaf92119af3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acaaff6f066b088455b1c8610650fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602d32c271f3c70a3cff9ad6422c69b7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9412f10b1db89bd924ad7beadc83331b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706e9acb62e73fac4c23fdbbd8a41a0d.png)
您最近一年使用:0次
2016-12-03更新
|
2169次组卷
|
5卷引用:江西省宜春市樟树中学2017-2018学年高一下学期第三次月考数学(理)试题