2024高三上·全国·专题练习
解题方法
1 . 如图
,已知椭圆
的方程为
和椭圆
,其中
分别是椭圆
的左右顶点.
恰好为椭圆
的两个焦点,椭圆
和椭圆
有相同的离心率,求椭圆
的方程;
(2)如图
,若椭圆
的方程为
.
是椭圆
上一点,射线
分别交椭圆
于
,连接
(
均在
轴上方).求证:
斜率之积
为定值,求出这个定值;
(3)在(2)的条件下,若
,且两条平行线的斜率为
,求正数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347b68f42934c74e0d759a67613a1da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3082b0f763a3f9a73d1c3e5e448f74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c763113a1fc48e8acc83787b8cd24eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaebaf8ceed245eba896f36d8ff14b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1470a8fcbdd2fa9badb34e498d14de1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b11b45b1ae99a58e5aac679974dabcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82875c5fd5f92475e5def5fb14207fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6398cc77bc5e5a65168505985fcbc36b.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec853fb315a3c7ce3699bc4ca0d74f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d17816617696dc58a42cacaa454e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2024·全国·模拟预测
2 . 甲、乙两名小朋友,每人手中各有3张龙年纪念卡片,其中甲手中的3张卡片为1张金色和2张银色,乙手中的3张卡片都是金色的,现在两人各从自己的卡片中随机取1张,去与对方交换,重复
次这样的操作,记甲手中银色纪念卡片
张,恰有2张银色纪念卡片的概率为
,恰有1张银色纪念卡片的概率为
.
(1)求
的值.
(2)问操作几次甲手中银色纪念卡片就可能首次出现0张,求首次出现这种情况的概率
.
(3)记
.
(i)证明数列
为等比数列,并求出
的通项公式.
(ii)求
的分布列及数学期望.(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffb021aa7d5a5c2f0691e337caad624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce603aa3abcb61750d2191aaa13dddc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f66b7e38f44f8cd5d48b3aa24a20fc.png)
(2)问操作几次甲手中银色纪念卡片就可能首次出现0张,求首次出现这种情况的概率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9131abf93295537bbc0c54a8c42e88e2.png)
(i)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c895d4ce5ce82ef9b311b9369b4de11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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3 . 已知函数
随机变量
,随机变量
,
的期望为
.
(1)当
时,求
;
(2)当
时,求
的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea8d40282dec2acfe25253514e87f81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e73ee99d27c577561fde186de7b8f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33261c9b0b1c3677c6db52fa88813d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884fa804e9e4ed197c1cc76e762f6760.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea01973bb7a048a88d183cb5c5cf8e2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe08722cf9300fe188dbbb71989c06c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884fa804e9e4ed197c1cc76e762f6760.png)
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7日内更新
|
257次组卷
|
4卷引用:概率、随机变量及其分布-综合测试卷B卷
(已下线)概率、随机变量及其分布-综合测试卷B卷河南省部分重点高中2023-2024学年高三下学期5月联考数学试卷 (新高考)(已下线)辽宁省沈阳市第二中学2024届高三下学期三模数学试题内蒙古自治区锡林郭勒盟2024届高三下学期5月模拟考试理科数学试题
名校
4 . 对于平面向量
,定义“
变换”:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8560ca9023cf64637ce1467f338556bd.png)
(1)若向量
,
,求
;
(2)已知
,
,且
与
不平行,
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d128ae3e21294e2eac5bcc775ccfb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a18fd5445fb8a04b925a2745a56f613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fddd9dc1110e60973b7b9e43bb1f9d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8560ca9023cf64637ce1467f338556bd.png)
(1)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea462b0382581d99c8bba51d9b79f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e186ebc624ebacde9a03b96289f1ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22601439d36b6a93453d738c2b803eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc499d2e731df31957eeaa355bfbac4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63cf7e5f25165ccf0e24d32add179ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a176f300a2462e4f1ffef99d30c21e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e719e667f2783febbec38dea080b98.png)
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5 . 进位制是人们为了计数和运算方便而约定的记数系统,如果约定满二进一,就是二进制:满十进一,就是十进制:满十六进一,就是十六进制.k进制的基数就是k.我们日常生活中最熟悉、最常用的就是十进制.例如,数3721也可以表示为:
一般地,如果k是大于1的整数,那么以k为基数的k进制数可以表示为
.其中
.为了简便,也会把它写成一串数字连写在一起的形式:
,如果不加下标就默认是十进制.
(1)令集合
,将B中的元素按从大到小的顺序排列,则第100个数为多少?
(2)若
,记
为整数n的二进制表达式中0的个数,如
,求
的值.(用数字作答)
(3)十进制中的数999在其他进制中是否也可以表示成一个各位数字之和为27的三位数?如果能,请求出所有的k进制数;如果不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e187d488943587384ba81366d7cb2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf78d6c2cd4fab5d71e969af0f530e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d47daf899fce1cb06151012a09153d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79224c6579e5f93906b81de9a7f8dbfd.png)
(1)令集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b963d591925c79c381bb8c7cf8121390.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39bc26525689d068504cd9298b19d424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c51592137a3a852f5c802be493e065a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39009f3279d0431b9b444634f18f355b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a80cc2a98cd5e91efa4169a97d4e8e1.png)
(3)十进制中的数999在其他进制中是否也可以表示成一个各位数字之和为27的三位数?如果能,请求出所有的k进制数;如果不能,请说明理由.
您最近一年使用:0次
名校
6 . 已知甲口袋有
个红球和2个白球,乙口袋有
个红球和2个白球,小明从甲口袋有放回地连续摸球2次,每次摸出一个球,然后再从乙口袋有放回地连续摸球2次,每次摸出一个球.
(1)当
时,
(i)求小明4次摸球中,至少摸出1个白球的概率;
(ii)设小明4次摸球中,摸出白球的个数为
,求
的数学期望;
(2)当
时,设小明4次摸球中,恰有3次摸出红球的概率为
,则当
为何值时,
最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0272c60cbea81dd30c4b5690ed9fd31c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc0db1f5bc1c43e4bd7231c7fe63d11.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8cc04da8dc0c2ae5bea4b8904567fd5.png)
(i)求小明4次摸球中,至少摸出1个白球的概率;
(ii)设小明4次摸球中,摸出白球的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a4480988244a9d04ec293975db2cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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名校
7 . 已知三棱锥
是边长为2的正三角形,
分别是
的中点,
在平面
内的投影为点
在平面
内的投影为点
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/899bb37ff0e8075cf8cf7d589be7d50d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a398d4645333a88e4a0816d5b7087702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b085fab4fc7b49bead663650b3bdeb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9521129014e5f138b49339d5b9f4dda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f526e2fe627bb4ddebe708c07d0a22fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() |
B.![]() ![]() ![]() |
C.![]() |
D.形如三棱锥![]() |
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2024-06-12更新
|
449次组卷
|
3卷引用:立体几何与空间向量-综合测试卷B卷
8 . 对于没有重复数据的样本
、
、…、
,记这m个数的第k百分位数为
.若
不在这组数据中,且在区间
中的数据有且只有5个,则m的所有可能值组成的集合为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad7f66c97bfce4c00c53d86700c961b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a76ca140172ecba82a7ec84c7a9d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621649c6156ae32223bb79da9fbf959c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/110f64c0aa40f7455a016edd0dbb8ea1.png)
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9 . 我们知道,在平面内取定单位正交基底建立坐标系后,任意一个平面向量,都可以用二元有序实数对
表示.平面向量又称为二维向量.一般地,n元有序实数组
称为n维向量,它是二维向量的推广.类似二维向量,对于n维向量,也可定义两个向量的数量积、向量的长度(模)等:设
,
,则
;
.已知向量
满足
,向量
满足
.
(1)求
的值;
(2)若
,其中
,当
且
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c2af42141367e6e9ff0296c31daa7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b3b354facacd72bc68da6ac07be453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48d974578eb15ca117e0cb1b59788d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99aa60676891adca75eac086182a15c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2581496116ddfba6dd03722fd771d5a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5babafd9f4e5c3c222ba25a3de66794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48d974578eb15ca117e0cb1b59788d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cb2f5c0569962cd7c1026f388cb661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99aa60676891adca75eac086182a15c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4492fb816272cd60cf3456c6a064020e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa3e5481ce1f11ea4cb1d1ddc71413.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301fa5679316c282923735aff9285559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ac252e9126ab540c0102b941f0ee42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74cac554f22f3655ef6691b2ef821eac.png)
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10 . 对于任意不为0的实数
定义一种新运算“#”:①
;②
,则关于
的方程
的根为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc9b449710062494286a01537ecdc00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d785aaa5c1be4b5728cf56b4727d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820023f3de39dffe868be95757ce76d2.png)
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