1 . 某机器有四种核心部件A,B,C,D,四个部件至少有三个正常工作时,机器才能正常运行,四个核心部件能够正常工作的概率满足为
,
,且各部件是否正常工作相互独立,已知
,设
为在
次实验中成功运行的次数,若
,则至少需要进行的试验次数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2fd0129b4e654a99a94f7e3ded77a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fccf604219eaa58dbfc99ddeae091b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed49735005eaa5f98d4406a337f0a996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb95dd39049f4660abcc5cb8cddd87ff.png)
您最近一年使用:0次
2024-03-21更新
|
797次组卷
|
3卷引用:上海市上海海事大学附属北蔡高级中学2023-2024学年高二下学期期末考试数学试题
名校
解题方法
2 . 某小组共有4名男生
,和3名女生
.若选一名男生和一名女生分别担任组长和干事,共有__________ 种不同的结果.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d10449bc77d692a7270e0f20a68cdf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
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2024-03-19更新
|
708次组卷
|
5卷引用:专题05 计数原理(十七大题型+优选提升题)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(沪教版2020选择性必修,上海专用)
(已下线)专题05 计数原理(十七大题型+优选提升题)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(沪教版2020选择性必修,上海专用)上海市同济大学第一附属中学2023-2024学年高二下学期质控1(3月)数学试卷(已下线)6.1 分类加法计数原理与分步乘法计数原理(6大题型)精讲-2023-2024学年高二数学题型分类归纳讲与练(人教A版2019选择性必修第三册)(已下线)第一章 排列组合与二项式定理 专题一 两个计数原理 微点1 分类加法计数原理与分步乘法计数原理【基础版】河南省信阳市商城县上石桥高级中学2023-2024学年高二下学期3月月考数学试题
名校
解题方法
3 . (1)从等轴双曲线
上任一点
分别作两渐近线的平行线,得矩形
(如图),求证:矩形的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b343054b22bb3d30eeec12c3ae4d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c06373f0ad9789976365ff5337cdbe.png)
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4 . 在四棱锥
中,底面
是边长为
的正方形,顶点
在底面内的射影
在正方形
的内部(不在边上),且
,
为常数,设侧面
与底面
所成的二面角依次为
,则下列各式为常数的是( )
①
②
③
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8ce39f25b73f8b2e33e5977881f4b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c108b335ca10bd2a6fd7d90e7287f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2338b97ef987779263cba61ceb790082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68bdeb716a658088cb15f94d07d73409.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbeee7959e179725a9b251bb269da6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4886dc9ec29d6e974cbbb56689eef40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a702c8b3689f20c9d43641afdf0e4b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8ce39f25b73f8b2e33e5977881f4b4.png)
A.①② | B.②④ | C.②③ | D.③④ |
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解题方法
5 . 考虑这样的等腰三角形:它的三个顶点都在椭圆
上,且其中恰有两个顶点为椭圆
的顶点.关于这样的等腰三角形有多少个,有两个命题:命题①:满足条件的三角形至少有12个.命题②:满足条件的三角形最多有20个.关于这两个命题的真假有如下判断,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069ffc1e3936d254303d588e1a70a3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.命题①正确;命题②错误. | B.命题①错误;命题②正确. |
C.命题①,②均正确. | D.命题①,②均错误. |
您最近一年使用:0次
6 . 已知双曲线
:
的左右顶点分别为
、
.
(1)求以
、
为焦点,离心率为
的椭圆的标准方程;
(2)直线
过点
与双曲线
交于
、
两点,若点
恰为弦
的中点,求出直线
的方程;
(3)动直线
:
恒过
,且与双曲线
的交于
、
两点(异于
),点
(常数
)是
轴上的一个定点,若恒有
成立,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1892b7c3cd7bea116f532f66fba44662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
(1)求以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd2574d31ac4c930f7ff6f3e0d0eb6ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383ab33ac888a652eb33ede5106e12c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6ae86d69ba2584c5511adebe64e761b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ebd13e16b7aebf9abdd2527afc4e079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c31ba2787bc36c28c1a3a54e93432cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5e5a468fb6c9a8aaa70d45ed479913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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7 . 已知
都是实数,实数
满足
,实数
满足
,判断以下哪个选项正确( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52924467a26d028634110dd352078ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27bbc19ea73ec4f10fe545bf4c0f6468.png)
A.对任意的实数![]() ![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() ![]() | D.不存在实数![]() ![]() ![]() |
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8 . 若对任意的
在区间
上不存在最小值,且对任意正整数n,当
时有
,
(1)比较
与
的大小关系;
(2)判断
是否为
上的增函数,并说明理由;
(3)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39ccc4701aa9da72f35581c3451e042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d1288c575c8cdce97930bc32c423b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b66875df124e8b7255feaea8e0c40f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea1ba78ae2c541ac99bd30802e0e1cf.png)
(1)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/951be8222c47cc238f89d63d2ea01df5.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03db4ea1dcb63b22cf4e917df5db581e.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636289ad84b4a3a51095dd32ca201f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b67cac8abe9566def881056297caf0d.png)
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9 . 已知椭圆
的方程为
,
分别是
的左、右焦点,A是
的上顶点.
(1)设直线
与椭圆
的另一个交点为
,求
的周长;
(2)给定点
,直线
分别与椭圆
交于另一点
,求
的面积;
(3)设
是椭圆
上的一点,
是
轴上一点,若点
满足
,
,且点
在椭圆
上,求
的最大值,并求出此时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(1)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
(2)给定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ee7ff8d52a34b3b2c36cd46ddd3a423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb5628b562b6e418f42c49def0283c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf33d73483c93f24cc6a1d76ef22ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2256bb0bc7474396bb28514f3d8262ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898c23aa61da0d360f2e4a456c74cd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b701c424ada05e27cc5560a10f809eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解题方法
10 . 在圆锥
中,
是底面圆周上一点.设
的长为1,且圆锥的侧面展开图是半圆.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/3959e348-a4df-47e9-aad2-dc0db2bfba0c.png?resizew=166)
(1)记圆锥的底面圆半径为
,母线长为
,则圆锥的侧面积
______(用
表示);在本题中,求圆锥的侧面积;
(2)求母线
与底面所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9654c9824b84dce1f840e3414c47ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/3959e348-a4df-47e9-aad2-dc0db2bfba0c.png?resizew=166)
(1)记圆锥的底面圆半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0831c5d685f557969567fd7c696c1da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29373d30bb0bc626d1ffba6a845842ad.png)
(2)求母线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
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