名校
解题方法
1 . 在长方形
中,
,
,点
在线段
上(不包含端点),沿
将
折起,使二面角
的大小为
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e231505648333857565accb0c3c898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3744ee15af01a8e7c0f126edb5f68132.png)
A.存在某个位置,使得![]() |
B.存在某个位置,使得直线![]() ![]() |
C.四棱锥![]() ![]() |
D.当![]() ![]() ![]() |
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名校
2 . 已知方程
的正根构成等差数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d688733a01b1bc9ac801100c50c60f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.![]() | B.![]() | C.2 | D.4 |
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名校
3 . 已知向量
,若函数
.
(1)求函数
的最小正周期;
(2)若
,求
的最值及取得最值时的
值;
(3)若函数
在
内有且只有一个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0b7df22c38eb1efabf5439faab7fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a636abb4a7d756eb1c3e120df822830b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa0b13116954f6338e1b3048d37a70d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25079f12119793682bee7dcd103d12e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e32a34b3381654b4e3a7e0324b896b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 平行四边形ABCD中,
,
,
.动点M满足
,
,
,下列选项中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9dab0293dbad92fe84bad6b0d957bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a55deaf56eefabb84a18805ab11c7872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f062c1ced859002ba975ae97c27cb608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e2e01346f60857ff635bb766802e57.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() |
D.![]() ![]() ![]() ![]() ![]() |
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5 . 甲、乙两人进行知识问答比赛,共有
道抢答题,甲、乙抢题的成功率相同.假设每题甲乙答题正确的概率分别为
和
,各题答题相互独立.规则为:初始双方均为0分,答对一题得1分,答错一题得﹣1分,未抢到题得0分,最后累计总分多的人获胜.
(1)若
,
,求甲获胜的概率;
(2)若
,设甲第
题的得分为随机变量
,一次比赛中得到
的一组观测值
,如下表.现利用统计方法来估计
的值:
①设随机变量
,若以观测值
的均值
作为
的数学期望,请以此求出
的估计值
;
②设随机变量
取到观测值
的概率为
,即![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6d1a2a6340864352cd68261b26c682.png)
;在一次抽样中获得这一组特殊观测值的概率应该最大,随着
的变化,用使得
达到最大时
的取值
作为参数
的一个估计值.求
.
表1:甲得分的一组观测值.
附:若随机变量
,
的期望
,
都存在,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f970f380a12c843bb4a74ff34a15b2ac.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafbc94594b8c877de8883dea10e374c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f95e54a9b7c66c97dc6ee6161a25c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f95e54a9b7c66c97dc6ee6161a25c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c69656b7a5085c9033cfb16a838c0a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
①设随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88738de257f3fdf71154ebc8d4c1d14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c69656b7a5085c9033cfb16a838c0a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbe7f95b5d89f9409ec24536da9e826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80746e5e22851a0f1075374a3c3280ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9383b6387e1a94d4929663769ab5ab7.png)
②设随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f95e54a9b7c66c97dc6ee6161a25c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c69656b7a5085c9033cfb16a838c0a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6d1a2a6340864352cd68261b26c682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6d1a2a6340864352cd68261b26c682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927068f621940e6731e02a0db41060bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6d1a2a6340864352cd68261b26c682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58b2b4120cd1e093a9b3052779d5a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58b2b4120cd1e093a9b3052779d5a73.png)
题目 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
得分 | 1 | 0 | 0 | ﹣1 | 1 | 1 | ﹣1 | 0 | 0 | 0 |
题目 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
得分 | ﹣1 | 0 | 1 | 1 | ﹣1 | 0 | 0 | 0 | 1 | 0 |
附:若随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf3baba074e8aeb6f3ea117865bbd1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71701db4b413f2364dbcbd612fbc8a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67962bdeee331b3e908dd05e3a8899c.png)
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河北省重点高中2024届高三下学期5月模拟考试数学试题(一)浙江省天域全国名校协作体2023-2024学年高三二模数学试题山东省青岛第二中学2024届高三下学期二模考试数学试题(已下线)数学(江苏专用02)(已下线)模块4 二模重组卷 第6套 全真模拟卷江苏省苏州实验中学2023-2024学年高二下学期5月月考数学试题广东省广州市执信中学2024届高三下学期教学情况检测(三)数学试题(已下线)专题03 第七章 随机变量及其分布列--高二期末考点大串讲(人教A版2019)
名校
解题方法
6 . 已知函数
的定义域为
,其导函数为
,若函数
的图象关于点
对称,
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac87434324956e4145e38ad92a1aa95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a91e4f3c8930674f98a9fa527709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac3b9f2559633b745717564096ead14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/959e5ab675f526dfb54b05f8f82151b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005761e387f7b83fe50ed6a97bdd7cf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e365a0f474ad40f96239b08a1ef52d54.png)
A.![]() ![]() | B.![]() |
C.![]() | D.![]() |
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7 . 若一个两位正整数
的个位数为4,则称
为“好数”,若
,且
,
为正整数,则称数对
为“友好数对”,规定:
,例如
,称数对
为“友好数对”,
,则小于70的“好数”中,所有“友好数对”的
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d13a6e30a21289e94fc277cf8837689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698c4d4e50062b4a7dd70fe1b4ab4fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ac064230ab6367a96d893d90e2eb05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c6dff41808d7155650360fd48aa667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a70feb95addc50c555e2eb6ad82521ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75f0e4f8c5195728e3e7675586a8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9317cb763ff70bd19b2950e7f3f74399.png)
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解题方法
8 . 记
的内角
,
,
所对的边分别为
,
,
.已知向量
,
.
(1)设单位向量
,若
与
共线,且
,求
;
(2)当
时:
(i)若
,求
;
(ii)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6849215c180ffa7aed5695cfe5169c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/309fc14fb3c33dd3532a3823019d7d70.png)
(1)设单位向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e66a1639eb1a8f7e8e23e67c246f3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea48f17ea5a7459bc77626ef7aa44b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37564ec4e9e92485f1769e8ffaac31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a36ec31cfd615abfbee3ed2f4a1d8883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4d070c5939bb0ec4a9d40d7e3c7d3f.png)
(i)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3711c8ba16405959bcb0b70385da1d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/413323ab92f73c1eabb235731bb5c399.png)
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3卷引用:河北省衡水市枣强中学2023-2024学年高一下学期第二次调研考试数学试题
河北省衡水市枣强中学2023-2024学年高一下学期第二次调研考试数学试题广东省深圳市深圳外国语学校理工高中2023-2024学年高一下学期3月调研考试数学试卷(已下线)第13题 解三角形与其他知识的交汇(高一期末每日一题)
名校
解题方法
9 . 下列说法中正确的是( )
A.在![]() ![]() ![]() ![]() ![]() ![]() |
B.已知点![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
C.已知![]() ![]() ![]() ![]() ![]() ![]() |
D.在![]() ![]() ![]() ![]() ![]() |
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3卷引用:河北省衡水市枣强中学2023-2024学年高一下学期第二次调研考试数学试题
河北省衡水市枣强中学2023-2024学年高一下学期第二次调研考试数学试题广东省深圳市深圳外国语学校理工高中2023-2024学年高一下学期3月调研考试数学试卷(已下线)专题1 以线性运算为背景的复杂问题【练】(高一期末压轴专项)
解题方法
10 . 已知正方体
的棱长为
为线段
上的动点,则三棱锥
外接球半径的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88f17dc8c547feb4fc581504a436657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5420c8c4cf105205deb4a1b8327e6de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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