名校
解题方法
1 . 现有A,B两个不透明盒子,都装有m个红球和m个白球,这些球的大小、形状、质地完全相同.
(1)若
,甲、乙、丙依次从A盒中不放回的摸出一球,设X表示三人摸出的白球个数之和,求X的分布列与数学期望;
(2)若
,从A、B两个盒子中各任取一个球交换放入另一个盒子中,
次这样的操作后,记A盒子中红球的个数为
,求:
(i)
的概率;
(ii)
的分布列.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65981f597cea11fcebe987d42e0e97de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d0f3799612b81e85b87241ec8eee68.png)
(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2e776ad6950e993ce1e4430ab36255.png)
(ii)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d0f3799612b81e85b87241ec8eee68.png)
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2 . 已知以下事实:反比例函数
(
)的图象是双曲线,两条坐标轴是其两条渐近线.
(1)(ⅰ)直接写出函数
的图象
的实轴长;
(ⅱ)将曲线
绕原点顺时针转
,得到曲线
,直接写出曲线
的方程.
(2)已知点
是曲线
的左顶点.圆
:
(
)与直线
:
交于
、
两点,直线
、
分别与双曲线
交于
、
两点.试问:点A到直线
的距离是否存在最大值?若存在,求出此最大值以及此时
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
(1)(ⅰ)直接写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c190daf6e3d1cdd5019c3f50a4f842e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a7e0e5238148676a584b1748e04d3f.png)
(ⅱ)将曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a7e0e5238148676a584b1748e04d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff2f5d89e535bab877ad226f086742a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ba6b6aa6c3f9faba6b03bc193a6e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
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2024-03-21更新
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1531次组卷
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5卷引用:湖南省衡阳市第八中学2024届高三下学期高考适应性练习卷(三)数学试题
名校
解题方法
3 . 日常生活中植物寿命的统计规律常体现出分布的无记忆性.假设在一定的培养环境下,一种植物的寿命是取值为正整数的随机变量
,根据统计数据,它近似满足如下规律:对任意正整数
,寿命恰好为
的植物在所有寿命不小于
的植物中的占比为
.记“一株植物的寿命为
”为事件
,“一株植物的寿命不小于
”为事件
.则下列结论正确的是( )
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28555fa2f3a09261cb4e0305d390145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
A.![]() |
B.![]() |
C.设![]() ![]() |
D.设![]() ![]() |
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4 . 若函数
在
上单调递增,则a和b的可能取值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7a98b117e51c5fa3028888e37fd515.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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5 . 已知无穷数列
,
.性质
,
,;性质
,
,
,下列说法中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61afe83270a244e2af1995c9f4f51f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8af17844e7059b9c96c75c8440671eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5a0c2ef759ad38721f51ad2298c66e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0971a0dad04b09fab7c3f0eafe5b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e7bd4fde43499209812ba20f87286c.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若等比数列![]() ![]() |
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6 . 已知平面上两定点
、
,则所有满足
(
且
)的点
的轨迹是一个圆心在
上,半径为
的圆.这个轨迹最先由古希腊数学家阿波罗尼斯发现,故称作阿氏圆.已知棱长为3的正方体
表面上动点
满足
,则点
的轨迹长度为( )
![](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/0c411fff1dd83ca4c5afca219f4bb541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472393b18c7880e73b40e31fbe2d951c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e80af1b0496f63751f07e945c062ecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab34ce6cee0673ab0d37b660d57bc07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-05-11更新
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9卷引用:湖南省衡阳市第八中学2024届高三下学期高考适应性练习(一)数学试题
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7 . 已知有穷数列![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140fc05a04e72b3899e3a20b788efacc.png)
中的每一项都是不大于
的正整数.对于满足
的整数
,令集合
.记集合
中元素的个数为
(约定空集的元素个数为0).
(1)若
,求
及
;
(2)若
,求证:
互不相同;
(3)已知
,若对任意的正整数
都有
或
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140fc05a04e72b3899e3a20b788efacc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80be0c3c50d2bd6230b53fbd056122df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315109103349a6e41373c994e89f9f51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1289cd5105a33641d0ab350880287b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4213f42ef29e8c3771e54baf8ce61fe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572d587a78e6277038797afe334301b9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee4961b7448f4016b2562d6f95c2c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b57a882fbf243394e93e6b1e8d63eb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf08e04e8782cd51427f5551848c9f3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ddb144ab2bb784e47504f1ace7585a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2949abdd567ee17ade2f8d4475c68615.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137a321fe86dc4cd36da85d38526e3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede05777d71357a6353a625a3b075077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96e4b7674a293dfa4c88c3703aceebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b40d829fa61250e8010041f0f2774c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831ed34d8c6d99fdd0b94688ef03bfcb.png)
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2023-05-05更新
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解题方法
8 . 已知
是单位向量,向量
满足
,且
,其中
,且
.则下列结论中,正确结论的序号是___________ .
①
;
②
;
③存在x,y,使得
;
④当
取最小值时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56eda4bb8604c18d0016a4377d05435a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd37f7f1058b31cd36e871ea80e6edee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4540e84bfb9ff9bb9f95d4d51dc99024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1157bfeb62efbb32bf37986e1b5affb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb9930c5b264d8e8602a6267d1015b0.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6315a65f0d41676603e4e15d3da0145.png)
③存在x,y,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a651125429f3ecc99794c427c354377.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4243432eb9da670db29b50c16109f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/979f456da73404e2f82c94a0170248ac.png)
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4卷引用:湖南省衡阳市第八中学2024届高三上学期第五次月考数学试题
湖南省衡阳市第八中学2024届高三上学期第五次月考数学试题北京市朝阳区2021-2022学年高一下学期期末质量检测数学试题(已下线)第六章 平面向量及其应用(基础、典型、易错、压轴)分类专项训练(3)(已下线)专题01平面向量线性、数量积运算4种常考题型归类-《期末真题分类汇编》(北京专用)