解题方法
1 . 如图,设
,当
时,定义平面坐标系
为
的斜坐标系.在
的斜坐标系中,任意一点
的斜坐标这样定义:设
,
是分别与
轴,
轴正方向相同的单位向量,若
,则记
.下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5854a3135bfc783f0a51ef40d09c51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad4c21d0009cf8265361890308e056e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5253a9a71037d60059b60237824193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4224bf1cbcd51f4cbdce93d981d65c5a.png)
A.设![]() ![]() ![]() ![]() |
B.设![]() ![]() ![]() ![]() |
C.设![]() ![]() |
D.设![]() ![]() ![]() ![]() ![]() ![]() |
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解题方法
2 . 已知
和
是夹角为
的两个单位向量,且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a7b546b578eb12c05dac348041d962b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637b95cf8df330e4323cf0dbb68c8c58.png)
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3 . 如图所示,
为等边三角形,
,
为
的内心,点
在以
为圆心,
为半径的圆上运动.
的值.
(2)求
的范围.
(3)若
,当
最大时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7bae5203f4b4acf23779114b3466e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac3633863228cb5a1435af59c84d7c1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59880e470359d8e9faf6ae5ce155cf2a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a7a2852b96715db6a3832e648e18e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e7bf9200b351a259ddfc6c0266129d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d380dea30f490babb2aef4edc49afc6.png)
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2024-03-12更新
|
788次组卷
|
3卷引用:浙江省杭州学军中学2023-2024学年高一下学期期中考试数学试卷
解题方法
4 . 已知向量
,
满足
,
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f394a0652f124394738837f88d5f0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404067afb19bd74f447a6c0c832af1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66af0cc2cecaa5e9795d80c5e9abc238.png)
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解题方法
5 . 如图,过双曲线
右支上一点P作双曲线的切线l分别交两渐近线于A、B两点,交x轴于点D,
分别为双曲线的左、右焦点,O为坐标原点,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/099b5c07-f878-4429-ba77-e9fd9d5e1b86.png?resizew=219)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176569a223942b06f78d81633e2467b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/099b5c07-f878-4429-ba77-e9fd9d5e1b86.png?resizew=219)
A.![]() |
B.![]() |
C.![]() |
D.若存在点P,使![]() ![]() ![]() |
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1766次组卷
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6卷引用:浙江省杭州学军中学2022-2023学年高二上学期期末数学试题
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解题方法
6 . 已知直线l:
与椭圆
交于A,B两点,点
为椭圆的右焦点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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|
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3卷引用:浙江省名校协作体2022-2023学年高二下学期开学联考适应性考试数学试题
21-22高一下·浙江·期中
名校
7 . 设A,B,C是△ABC的三个内角,△ABC的面积S满足
,且
,
.
(1)若向量
,
,求
的取值范围;
(2)求函数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8f600a4b31918ac9b34e9616d05135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be49b607826b359b2d49e4bdb4d1a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6afb7d794dccc9a4425ef7d7e9abed6.png)
(1)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616244009cc72dbbfa655638f0667e70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be191c63539b923b64018f692b90cb97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dce19a5aa0467cb5474260b0b4d26fb.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dea327a749eadad43bb84873fec9da7.png)
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解题方法
8 . 已知平面向量
满足
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c45289b7d55ec6e64d501717b0358c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d723baf90e91b4691a2dcdd8f2a53e.png)
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|
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2卷引用:浙江省温州中学2022届高三下学期5月模拟数学试题
9 . 如图,已知边长为1的正方形
是线段
上的动点(包括端点),
分别是
上动点,且
分别是
中点,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/dcf336a8-ce19-4f8a-a0b7-f870e4b121bf.png?resizew=143)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462d9d51496fa5250f55e7368111e056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c3cc1f331dbb2248b0829039df7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a69c4757b2b8091e189e5dd116aa5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82812a8606dac22d9d492727ce9c4b7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/dcf336a8-ce19-4f8a-a0b7-f870e4b121bf.png?resizew=143)
A.![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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2卷引用:浙江省杭州地区(含周边)重点中学2021-2022学年高一下学期期中数学试题
解题方法
10 . 已知平面向量
,
,
满足
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/765e1872502270ab28cf1856af1c0d46.png)
的最小值是________ .
![](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/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028866c2a8d288c11b731c22fa290d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1dbe3ec3f1322f60596ca7717b9077b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/765e1872502270ab28cf1856af1c0d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd10cec2257315603594fd746edec68.png)
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