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1 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90dce7587b4c86b491bbd20f29771292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90dce7587b4c86b491bbd20f29771292.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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2 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a642e3f37ab084e7c03d048a463cf97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d450aea0fb89e956fc4caa3a9c59fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a642e3f37ab084e7c03d048a463cf97.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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3 . 已知向量
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58971cb3514d7ba1c05a46dc076a8501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38a4a0911a4ddb5685d2026713c491c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-08-17更新
|
159次组卷
|
4卷引用:吉林省梅河口五中2016-2017学年高一下学期期末考试理数试题
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解题方法
4 . 已知平面向量
,
,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d2807ecc81d36bee4048fa4d570895d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2cfcad001f134dfaab9460b29a3c08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7b0e8fb4a348253745a5e87faeca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d845f57379ba14aba02c888c67e1d642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知
,向量
与
的夹角为
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79573056d66b2779294109afeb2ca6e.png)
![](https://img.xkw.com/dksih/QBM/2017/7/18/1732690191048704/1733773685424128/STEM/ff55b58a42294efd8cfc6c49e9987013.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2017/7/18/1732690191048704/1733773685424128/STEM/ff265a1cd8d34ca9986c75e618ee316b.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d716f2f7c457cd68ebe38672ab23873.png)
A.![]() | B.![]() | C.2 | D.4 |
您最近一年使用:0次
2017-07-19更新
|
68次组卷
|
2卷引用:吉林省长春外国语学校2016-2017学年高一下学期期末考试数学(文)试题
名校
6 . 函数y=cos(2x-
)是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953b78787e8b2454510bedbfa14b7167.png)
A.最小正周期为![]() | B.最小正周期为π的奇函数 |
C.最小正周期为![]() | D.最小正周期为π的偶函数 |
您最近一年使用:0次
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7 . 与向量
方向相反的单位向量是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e974ce644587309e2e001d98b03698.png)
A.(5,-12) | B.(-![]() ![]() |
C.(![]() ![]() | D.(![]() ![]() |
您最近一年使用:0次
8 . 已知
,
,
,则向量
与
的夹角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ef516da1c5d6c4aec4c27c33b5a91d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0417f9605746585123885434fa5b72b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2660dece00c01c6adc53fe9bd664a9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-07-05更新
|
796次组卷
|
2卷引用:吉林省长春外国语学校2016-2017学年高一下学期第二次月考数学试题
名校
解题方法
9 . 已知向量
,
,若向量
⊥
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0879c88f3bc2b7993bc6ee47fb4f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ccaf40f8006b3ff56df29bf8006bf2.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/81dea63b8ce3e51adf66cf7b9982a248.png)
A.1 | B.2 | C.3 | D.-3 |
您最近一年使用:0次
2017-07-05更新
|
450次组卷
|
3卷引用:吉林省长春外国语学校2016-2017学年高一下学期第二次月考数学试题
名校
10 . 已知
,把
的图象向右平移
个单位,再向上平移2个单位,得到
的图象,若对任意实数
,都有
成立,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2100c783a979e8437a10e3c31aaa27fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8384f95490c3b09ee722c19c36285a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdaf49f9611922348aa2784465da614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c562ed8f2f9fdf024d28ab5c4db8cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2100c783a979e8437a10e3c31aaa27fe.png)
A.3 | B.4 | C.2 | D.![]() |
您最近一年使用:0次
2017-06-14更新
|
1017次组卷
|
7卷引用:2017届吉林省吉林市普通中学高三毕业班第二次调研测试数学(理)试卷
2017届吉林省吉林市普通中学高三毕业班第二次调研测试数学(理)试卷2017届吉林省吉林市普通中学高三毕业班第二次调研测试数学(理)试卷辽宁省锦州市2017届高三质量检测(一)数学(理)试题(已下线)《2018届优生-百日闯关系列》数学专题四 专题四第三关(已下线)【新教材精创】期中模拟卷提升篇(2)江西省赣州市石城县石城中学2020-2021学年高一3月月考数学(理)试题辽宁省大连市第一中学2020-2021学年高一下学期期中考试数学试题