解题方法
1 . 已知平面向量
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d42de47fdee791fa28774d048aaca70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018bfa5035e091d053e64228fe3cf068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc42090338482f4ee46e31699dae556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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名校
2 . 已知向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016e4d15ab8f5359f6aa3b42674b0c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0617e8991a39b0760ad5d6226a9f42d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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2019-12-05更新
|
377次组卷
|
3卷引用:陕西省延安市吴起高级中学2019-2020学年高一下学期第三次质量检测数学试题
3 . 在平行四边形ABCD中,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ec620fbab68829fa685c48af20a4e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b98848a6552f895b50a25b84b52ead8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
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2021-01-22更新
|
173次组卷
|
3卷引用:陕西省安康市2020-2021学年高三上学期第二次教学质量联考理科数学试题
名校
解题方法
4 . 在
中,
为
中点,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/a3f206a24e7e01be12966b02d02d8b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/effef39a97d35aa7295ccbb7f6405249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
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名校
解题方法
5 . 在
中,角A,B,C的对边分别为a,b,c,已知
,
,向量
与
共线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5a94417d0d62715ea4067280d733df.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72335ff513c24f55115bd073ab7c9a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23176a2612abb836017b037ba2430d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46d0f558a1b6d6f0a0d45e483d68a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5a94417d0d62715ea4067280d733df.png)
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11-12高一上·广东梅州·期末
名校
解题方法
6 . 设向量
是两个不共线的向量,若
与
共线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42503437fb44722722cd20835f11d233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebabb49aaa1069fc1335eb6bfe3b1bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f12d647bacaf146b74b5cbe8d26603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次
2016-11-30更新
|
1329次组卷
|
10卷引用:2015届陕西省高三教学质量检测一理科数学试卷
2015届陕西省高三教学质量检测一理科数学试卷2015届陕西省高三教学质量检测一文科数学试卷2016届江苏省清江中学高三上学期周练数学试卷2河南省开封市五县部分校2023-2024学年高一下学期3月联考数学试题(已下线)2011年广东省梅县东山中学高一上学期期末考试数学试卷【全国百强校】安徽省淮北市第一中学2017-2018学年高一下学期期中考试数学试题【全国百强校】广西桂林市第十八中学2017-2018学年高一下学期期中考试数学试题四川省泸州市2018-2019学年高一下学期期末数学试题湖南省五市十校2018-2019学年高一下学期期中数学试题天津市第九十五中学益中学校2022-2023学年高一下学期期中数学试题
7 . 已知向量
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9403c574a1cc0de4d26e0ab2a359713b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fbc714c63815dad9a27418f6492f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
2020-02-28更新
|
232次组卷
|
3卷引用:2020届陕西省安康市高三教学质量检测第二次联考数学文科试题
名校
8 . 已知
,
是两个相互垂直的单位向量,
,
,则下列说法正确的序号是________
① 若
,则
②当
时,
,
夹角的余弦值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695eae1ebb413ebbd49deab82cf41f63.png)
③存在
使得
与
同时成立
④不论
为何值,总有
成立
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b28baf17059c56ee9ad1ae4814acd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b04618e5b2db68f2de6ba68972c505c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243bd5e612650ec5d3aa617e1aab4b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb64a0a843d786fe5a67f20dbe663691.png)
① 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392aaa1e0ebe6cc75dcf91190aabc435.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfec4233214c3a729c843dee0d186db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695eae1ebb413ebbd49deab82cf41f63.png)
③存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b995d10fad9301ff8ad38b5af24fd354.png)
④不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00de324bd39ef75af79fc9e5319e739.png)
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解题方法
9 . 设向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d607667f2516c58bbdff03e01be50f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1baf62d54af5eea5056cc35481b06f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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2020-09-20更新
|
203次组卷
|
2卷引用:陕西省西安市第一中学2020-2021学年高三上学期模拟调研考试数学(文)试题
10 . 已知斜率为
的直线过抛物线
的焦点
,与抛物线
交于
两点(
在
的左侧),又
为坐标原点,点
(异于
)也为抛物线
上一点,且
,则实数
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b527ec9f92467b8f24554a2a67ee987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a5c41c9fb5be1cc65393fdfae14eea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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