1 . 已知点
为
的重心,过点
的直线与射线
,
分别交于点
,
,且满足
,
,则
的最小值为__________ .
![](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/895dc3dc3a6606ff487a4c4863e18509.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d67a383a96bc2f7c23edddc38d5b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1733c8875528a6625bba0fd9f81e02f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
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2 . 如图,在平面四边形
中,
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113986d9507fc5015e71989831c128b.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a3b0cd3f1211dfffbb834ec4da6412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0664c74b1b9ae5ab97702df56e25c870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113986d9507fc5015e71989831c128b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/7b478740-3761-4c83-a5a5-986e44a997f9.png?resizew=163)
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3 . 在
中,若
,
,
,
分别为
边上的三等分点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc908f217bd73669afab42c36836b9d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691278e39fa214a152681b2f8288d0f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc908f217bd73669afab42c36836b9d.png)
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解题方法
4 . 设
,
分别是正方形
的边
,
上的点,且
,
,如果
(
,
为实数),则
的值为( )
![](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/411b38a18046fea8e9fab1f9f9b80a5f.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/01ed003b25adcd1e39639feab0b18615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54929ee2b6983c273fc8b662fb343767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d70cb9d39ca6706ac1b8ec0aaf192a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
A.![]() | B.![]() | C.![]() | D.1 |
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2卷引用:天津河西2017-2018学年高三上期中(理)数学试题
真题
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5 . (理)在直角坐标系x、y中,已知点A(0,1)和点B(-3,4),若点C在∠AOB的平分线上,且|
|=2,求
的坐标为_____________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7195a0b5b59c9462b9faaf5a9fcfc6e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7195a0b5b59c9462b9faaf5a9fcfc6e0.png)
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15卷引用:2005年普通高等学校招生考试数学(文)试题(天津卷)
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6 . 如图,正方形
的边长为2,
为
的中点,
,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64fdbcbeca55ada5509aae3d383c4a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e911ef89693a89234d7d3ad0effaeb4b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-01-26更新
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7 . 如图,正方形
中,
为
的中点,若
,则
的值为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a751c93c21512948a7414b6efafbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1113ccae1ec1a3fb67a02c34c6ba1937.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/db5069d1-701f-4281-a570-80e06bd98a11.png?resizew=130)
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13-14高一上·吉林长春·期末
名校
8 . 已知△ABC为等边三角形,
,设点P,Q满足
,
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b981a38ddc94e2806871d7e8a17290d.png)
______________________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748976b9d6406bf5f2598845ec69c2de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c6945b26a3490fa1dd8b4a2ccb615b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b641bc4ce715973f64f732546adae4a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd9736828195f010db4e1f0a9dea7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d1e4a99c17691248740942931c4658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b981a38ddc94e2806871d7e8a17290d.png)
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7卷引用:天津市朱唐庄中学2022届高三线上模拟数学试题
天津市朱唐庄中学2022届高三线上模拟数学试题(已下线)2012-2013学年吉林省长春二中高一上学期期末考试数学试卷上海市徐汇区位育中学2018-2019学年高二上学期开学考试数学试题上海市复旦大学附属中学2016-2017学年高二上学期期中数学试题四川省成都市树德中学(光华校区)2018-2019学年高一下学期开学考试数学试题(已下线)专题6.1 平面向量及其应用 章末检测1(易)-【满分计划】2021-2022学年高一数学阶段性复习测试卷(人教A版2019必修第二册)河南省周口市商水县实验高级中学2021-2022学年高一下学期第二次月考数学试题
9 . 已知
.
(1)求点
的坐标;
(2)若点
在第二象限,用
表示
;
(3)设
,若
与
垂直,求
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc654cb9c6332c55f6aa8c9a4de84bef.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b704dc322a545a3ebf6979900d13c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436b63e793d6d39990341d29cf47f10.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d05c60803d5f268abe0c12a985f13b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0aa58ce19a3432676fc18de1a925a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00b863991d441829e9ccbc21a796301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00b863991d441829e9ccbc21a796301.png)
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2017-11-17更新
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10 . 在平行四边形
中,已知
,
,点
是
的中点,
与
相交于点
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adc0c35239daa86efe3fb750c410153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
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