名校
解题方法
1 . 某学校食堂每天中午为师生提供了冰糖雪梨汤和苹果百合汤,其均有止咳润肺的功效.某同学每天中午都会在两种汤中选择一种,已知他第一天选择冰糖雪梨汤的概率为
,若前一天选择冰糖雪梨汤,则后一天继续选择冰糖雪梨汤的概率为
,而前一天选择苹果百合汤,后一天继续选择苹果百合汤的概率为
,如此往复.
(1)求该同学第二天中午选择冰糖雪梨汤的概率.
(2)记该同学第
天中午选择冰糖雪梨汤的概率为
,证明:
为等比数列.
(3)求从第1天到第10天中,该同学中午选择冰糖雪梨汤的概率大于苹果百合汤概率的天数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求该同学第二天中午选择冰糖雪梨汤的概率.
(2)记该同学第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfe0ccc18feef217770312ac21ade7e.png)
(3)求从第1天到第10天中,该同学中午选择冰糖雪梨汤的概率大于苹果百合汤概率的天数.
您最近一年使用:0次
2024-02-27更新
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1353次组卷
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5卷引用:贵州省黔东南苗族侗族自治州2023-2024学年高三上学期九校联考(开学考)数学试题
贵州省黔东南苗族侗族自治州2023-2024学年高三上学期九校联考(开学考)数学试题湖南省三湘创新发展联合体2023-2024学年高三下学期2月开学统试数学试题广西壮族自治区桂林市2023-2024学年高二下学期入学联合检测卷数学试题湖南省邵阳市新邵县第二中学2024届高三下学期开学考试数学试题(已下线)专题3.5马尔科夫链模型(强化训练)-2023-2024学年高二数学下学期重难点突破及混淆易错规避(人教A版2019)
2 . 一般地,
个有序实数
,
,
,
组成的数组,称为
维向量,记为
.类似二维向量,对于
维向量,也可以定义向量的加法运算、减法运算、数乘运算、数量积运算、向量的长度(模)、两点间的距离等,如
,则
;若存在不全为零的
个实数
,
,
,
使得
,则向量组
,
,
,
是线性相关的向量组,否则,说向量组
,
,
,
是线性无关的.
(1)判断向量组
,
,
是否线性相关?
(2)若
,
,
,当
且
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3f9a726dcb269c73e7ac85b8731984.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47b73c051cf7483f480eea23d7a0240d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e7f7030526d65d5fff785d0d35a6ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835f8af39ef5d6fa1f9627d82208a500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f062e5f6a6f052da1607c84add1bcfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707707a426109dd5a5c7dda7bc3e0b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707707a426109dd5a5c7dda7bc3e0b21.png)
(1)判断向量组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b1e387365f75b288a6fb0ed35bcf00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5e34e20d6d95c15c69b529c9bcf020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3252c2f9e4bdde79725cb95ec5bed1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d5cd21ff3c760e7ec3130f5bfa8c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c49e107a51447339b6b46403006ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541e541ef98215381bb9120cd39020ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec181f4d57ff5967e94c36ffa4b9b52f.png)
您最近一年使用:0次
名校
解题方法
3 . 已知直线
与曲线
的两个公共点之间的距离为
.
(1)求C的方程.
(2)设P为C的准线上一点,过P作C的两条切线,切点为A,B,直线
的斜率分别为
,
,且直线
与y轴分别交于M,N两点,直线
的斜率为
.证明:
为定值,且
成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e1238ecbd621b0611e5bd5fc7eb5ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee05b3210c8964deef8ff771173d288.png)
(1)求C的方程.
(2)设P为C的准线上一点,过P作C的两条切线,切点为A,B,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed1e9cdd5a82f29ec89b2c53b4fa6f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b916d1dcf37d56ae470b16c0aa752ce3.png)
您最近一年使用:0次
2022-03-09更新
|
1287次组卷
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7卷引用:贵州省黔东南州2022届高三一模考试数学(理)试题
贵州省黔东南州2022届高三一模考试数学(理)试题河南省名校联盟2021-2022学年高三下学期3月大联考理科数学试题河南省名校联盟2021-2022学年高三下学期3月大联考文科数学试题河北省部分名校(唐县第一中学等)2022届高三下学期3月联考数学试题广东省2022届高三下学期3月大联考数学试题(已下线)专题28 圆锥曲线中的定值定点问题- 2022届高考数学一模试题分类汇编(新高考卷)福建省泉州第五中学2023届高三毕业班高考适应性检测(二)数学试题