1 . 一艘船从点A出发,以2
km/h的速度向垂直于对岸的方向行驶,船实际行驶速度的大小为4km/h, 则河水的流速的大小为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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2017-07-16更新
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253次组卷
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2卷引用:山西省应县一中2016-2017学年高一下学期3月月考数学试题
2 . 如图,视一条河的两岸为两条平行直线,河宽500m,一艘船从河的一岸
处出发到河对岸,已知船的速度为
,水流速率为
,当行驶航程最短时,所用的时间为__________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ec490c4c13a411dd5fd0689d12b931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be27a46423678930b7d293bc9223783d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ce48eafd36547782174eb304d4a003.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/12/1eb5ac69-fe76-4403-a9c9-04e33177d175.png?resizew=149)
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3 . 在平行四边形
中,已知
,
,则四边形
的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864e6d769b1fddede12d35d82e6345c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca14bb65499406ebe44592862f0a051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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2017-04-18更新
|
582次组卷
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6卷引用:2017届陕西省黄陵中学高三(重点班)4月月考(高考全国统一全真模拟二)数学(文)试卷
2017届陕西省黄陵中学高三(重点班)4月月考(高考全国统一全真模拟二)数学(文)试卷2017届陕西省黄陵中学高三(重点班)4月月考(高考全国统一全真模拟二)数学(理)试卷甘肃省肃南裕固族自治县第一中学2018届高三1月检测考试数学(文)试题甘肃省肃南裕固族自治县第一中学2018届高三1月检测考试数学(理)试题(已下线)6.4.1平面几何中的向量方法+6.4.2向量在物理中的应用举例【第一练】“上好三节课,做好三套题“高中数学素养晋级之路安徽省淮南第二中学2023-2024学年高一下学期3月阶段检测数学试题
4 . 已知点
在
内(不含边界),且
,则
的取值范围为
![](https://img.xkw.com/dksih/QBM/2016/9/8/1573005310181376/1573005478633472/STEM/3dd951d6ffd94d2398ecc0349b5b7a66.png)
![](https://img.xkw.com/dksih/QBM/2016/9/8/1573005310181376/1573005478633472/STEM/50d4b2a516b445f5b4287dca1de9ecef.png)
![](https://img.xkw.com/dksih/QBM/2016/9/8/1573005310181376/1573005478633472/STEM/101cdc96b6b344ef92f8cd17f652cdaf.png)
![](https://img.xkw.com/dksih/QBM/2016/9/8/1573005310181376/1573005478633472/STEM/2a5cc414430f4777aa393f336645d3b2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知平面向量
,
满足
,且
,
,则向量
与
夹角的正切值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696bf63a3a726968a19b8927be5a2112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0928087301c0628fba2a9cd3af14f34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca925a52dbe88d40118993425365bf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c6273295371c1cae7f8973b1f2c9e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b6b6a2e5220fdf9daa844ef9db7b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696bf63a3a726968a19b8927be5a2112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0928087301c0628fba2a9cd3af14f34d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-04更新
|
310次组卷
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4卷引用:2016届江西省高安中学等九校高三下学期联考文科数学试卷
6 . 如图所示,矩形
的对角线相交于点
,
的中点为
,若
(
为实数),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8f2c78936f4d0e53aade78aede9657.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927076605952/1572927082545152/STEM/5374f7160ceb4e52b230b41d7d3bc99f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927076605952/1572927082545152/STEM/e730119e39a0422680e3e2121cfc9357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c90bea1a361419a54bcb9cd49f98d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8f2c78936f4d0e53aade78aede9657.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572927076605952/1572927082545152/STEM/5374f7160ceb4e52b230b41d7d3bc99f.png)
A.1 | B.![]() | C.![]() | D.![]() |
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7 . 已知
,且
∥
,则
等于
![](https://img.xkw.com/dksih/QBM/2016/6/30/1572845585432576/1572845590552576/STEM/f07b75377a814995ac0793544461a18c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696bf63a3a726968a19b8927be5a2112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05a342a4d902b387d9ffe6980a13bbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
484次组卷
|
2卷引用:2015-2016学年四川省雅安市天全中学高一下学期期中理科数学试卷
8 . 平面内已知向量
,若向量
与
方向相反,且
,则向量![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bdc6e3b1f6808626b04c239e35392c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1ca97ab2f8c9867134fc188ecc8df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b5960e052f614ae45628785cb2cbf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46339ad09a0f145eae10dee14e6c287d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e24f9a7075d470b99623be3b6e70853c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bdc6e3b1f6808626b04c239e35392c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 设
是△
所在平面内的一点,且
,则△
与△
的面积之比是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba23a1cb25ea616240923084bacb514e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-04更新
|
1030次组卷
|
4卷引用:2016届广东省广州市普通高中毕业班综合测试一文科数学试卷
10 . 已知|
|=2,|
|=4,
⊥(
+
),则
与
夹角的度数为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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2016-12-03更新
|
1017次组卷
|
2卷引用:2015-2016学年河北衡水冀州中学高二上学期第一次月考文科数学试卷