名校
1 . 正
的边长为1,中心为O,过O的动直线l与边AB,AC分别相交于点M、N,
,
,
.给出下列四个结论:
①
;
②若
,则
;
③
不是定值,与直线l的位置有关;
④
与
的面积之比的最小值为
.
其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3abd34df1150309cb07ac490e493abf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbb8904776ef2199390ad6eeecbb187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbbf438660d3f1d1df13b7abb7db8c68.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf09a57c67f3ac18a94bf82bb1c0820.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c27334d7a603d274af7e73585a991a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4561e47a142958c953fd14a5494bda.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587b693b82241eb9c32cdbb96c209f33.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
其中所有正确结论的序号是
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7卷引用:四川省高县中学校2021-2022学年高一下学期第二次月考数学(文)试题
名校
解题方法
2 . 如图,已知四棱锥
,底而ABCD是边长为2的正方形,侧棱长相等且为4,E为CD的中点,则异面直线CM与AE所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987895386898432/2989966501199872/STEM/9db79b67-6e16-406a-9f78-5625f2ede596.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987895386898432/2989966501199872/STEM/9db79b67-6e16-406a-9f78-5625f2ede596.png?resizew=166)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:山西省2021-2022学年高一下学期第三次月考数学试题.
3 . 欧拉公式“
”被誉为数学史上最美公式,公式的成立蕴含了复数的三角表示与指数表示:
,其中
,
是以x非负半轴为始边,复数z对应的向量
所在射线为终边的角,比如![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facfc30e6146508572e5df95ef1b8092.png)
.复数指数形式的引入方便了复数的开方运算,比如![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c30c389f57947ab7527ff9229f83560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de50b12661ac2bf0c62c1a265caf849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9221e55c83ede306dd4c26a94af8534.png)
,则
的结果可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c027518ad4545ffd06d78ced9851872e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797756321d855a9434ed0b049ced6566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f48aa30900adc9205a6810d31d92e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d850c2157b5355cb1c718b4577483cb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facfc30e6146508572e5df95ef1b8092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1924ae8b4bee5c818157f9c930879d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c30c389f57947ab7527ff9229f83560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de50b12661ac2bf0c62c1a265caf849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9221e55c83ede306dd4c26a94af8534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590bd044eed840a96b6ee9da967b5f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f3d968e117fffa07a441798da9a99c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
4 . 在
中,内角A,B,C的对边分别是a,b,c,
,且
.
(1)求
;
(2)若点D在线段
上,且
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988b7e964e313579ab8869d67d5be007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf530176292c760d6c2fbc9a364f2fc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679a95158ae16c0c7adc264080cf151e.png)
(2)若点D在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2卷引用:山西省名校2021-2022学年高一下学期5月联考数学试题
名校
5 . 在长方体
中,
,E,F分别为棱
上一点,且
,则过点C,E,F的平面截该长方体所得的面面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71121f0da778645dbe350e07b66f242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31be3b7305d6c181420ea7b28c420851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f9580ce9120f4577ab5cd0e8901dfa.png)
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5卷引用:河北省邢台市南和区第一中学2021-2022学年高一下学期第四次月考数学试题
河北省邢台市南和区第一中学2021-2022学年高一下学期第四次月考数学试题山西省名校2021-2022学年高一下学期5月联考数学试题湖南省2021-2022学年高一下学期5月联考数学试题山西省太原市第五中学2022-2023学年高一下学期5月月考数学试题(已下线)核心考点06空间点、直线、平面的位置关系-【满分全攻略】2022-2023学年高一数学下学期核心考点+重难点讲练与测试(人教A版2019必修第二册)
名校
解题方法
6 . 在复平面内,
是原点,向量
对应的复数分别为
,
,
是虚数单位 , 设函数
.
(1)求函数
的解析式;
(2)若函数
在区间
上有2个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1625e24072a8fe6c277ecfca2c62cdaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12bb4b7bfe12231bde2ccb0330e5ea13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bbfe5860f9a34f840d2cc6e3713a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae92073e597401abb93ffb863453ecd.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25079f12119793682bee7dcd103d12e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833e2bf39c550dd4840d7dcdc1ed3a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
7 . 如图,点
位于以
为直径的半圆上(含端点
,
),
是边长为2的等边三角形,则
的取值可能是( )
![](https://img.xkw.com/dksih/QBM/2022/5/25/2987069961273344/2988429335584768/STEM/c4142cd9-fabe-427d-ac0c-8ce9147cc288.png?resizew=127)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd59cb5282ab5f5e744cbc089b0d435c.png)
![](https://img.xkw.com/dksih/QBM/2022/5/25/2987069961273344/2988429335584768/STEM/c4142cd9-fabe-427d-ac0c-8ce9147cc288.png?resizew=127)
A.![]() | B.0 | C.1 | D.4 |
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|
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6卷引用:河北省保定市部分学校2021-2022学年高一下学期第二次月考数学试题
河北省保定市部分学校2021-2022学年高一下学期第二次月考数学试题湖北省恩施高级中学2021-2022学年高一下学期期末数学试题(已下线)第03讲 平面向量的数量积 (精练)-2023年高考数学一轮复习讲练测(新教材新高考)四川省泸州市泸县第五中学2022-2023学年高一下学期期末数学试题(已下线)10.2 平面向量的数量积(精讲)山西省大同市煤矿第二中学校2023届高三第四次模拟考试数学试卷
8 . 在
中,若
,则角
的值可以为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28322d8272301d5ef3ae3ca39c5c438b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
9 . 平面向量
,
,其中
,
,且
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438321443226be3bce3619cea53d1f7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788cefeb1b4d95f2b0f3f122dfc596c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e35d6e8788838f5c3c912dd882d1a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407e4330cfdd5cd0bcfd4f3bd1a898e6.png)
A.6 | B.7 | C.8 | D.9 |
您最近一年使用:0次
10 . 如图,圆
,圆
半径均为4,两圆外切于点O,点A是圆
上任意一点,点B是圆
上任意一点,则
的最小值为___________ ,最大值为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ace585d3cc2e113a0927cdf9e56756a.png)
![](https://img.xkw.com/dksih/QBM/2022/5/25/2987113801785344/2988216381399040/STEM/5ab83bc3f3234971b7232965d9da26ab.png?resizew=322)
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