名校
1 . 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)
您最近一年使用:0次
2 . 对于任意给定的四个实数
,
,
,
,我们定义方阵
,方阵
对应的行列式记为
,且
,方阵
与任意方阵
的乘法运算定义如下:
,其中方阵
,且
.设
,
,
.
(1)证明:
.
(2)若方阵
,
满足
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e84c30444f13d37ada78285dc4f83b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e76d1d8e50dda4d50229a8a20c57e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc29ee719feeedfbc8c529cf11348abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e11a5b70e1e2e685d1783a4707872e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ec97af19b15cd584710a3faf30c716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f44b167b4e75af29a18637f71f3ebfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b39fcc210ec89dbc7d684a70a34542c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d17ebf9f595cdb9dab841dec703b512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a4ed514630bd37fab9765b3fb5f2cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709d09c76c222f156df31a1bba5f2ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e4a35eca00ea2f4580d62515d54d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95035eeae686e910be45f08093e406c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e7d309cb178b71c6e56f5b7f610413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109b4ece615b08a89a7f69d436f448b0.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb109c49695bce8c5b5cf4fad95772.png)
(2)若方阵
![](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/2221c60bc15c59fa1b3ac74a23b57cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fa9bfe3bf3e3b7265da3c49d31f1bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35536fb98d8b24cead230c8df95fd9d3.png)
您最近一年使用:0次
2024-06-13更新
|
163次组卷
|
3卷引用:吉林省通化市梅河口市第五中学2024届高考模拟预测数学试题
2024·全国·模拟预测
名校
解题方法
3 . 已知直线
和椭圆
.
(1)证明:
与
恒有两个交点;
(2)若
为
与
的两个交点,过原点且垂直于
的直线交
于
两点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b648c913b1b66abb9cd526dd8a7b2ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0b0ae6048bf94ccd5a3b4a8aafd81e.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce9db8bf6dff7b5b1feb849f5532f22.png)
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名校
解题方法
4 . 为进一步培养高中生数学学科核心素养,提高创造性思维和解决实际问题的能力,某省举办高中生数学建模竞赛现某市从M,N两个学校选拔学生组队参赛,M,N两个学校学生总数分别为1989人、3012人.两校分别初选出4人、6人用于组队参赛,其中两校选拔的人中各有两人有比赛经验,按照分层抽样从M,N两个学校初选人中共选择5名学生组队参赛,设该队5人中有参赛经验的人数为X.
(1)求随机变量X的分布列及数学期望
;
(2)各市确定5人组队参赛,此次比赛规则是:小组内自行指定一名同学起稿建立模型,之后每轮进行两人单独交流.假设某队决定由A起稿建立模型,A从其他四名成员中选择一人B进行交流,结束后把成果交由B,然后B再从其他包括A在内的四个成员中选择一人进行交流
每一个环节只能是两名成员单独交流,每个小组有20次交流机会,最后再进入评委打分环节,现该市选定甲、乙、丙、丁、戊五人参赛,其中甲、乙两人有参赛经验.在每次交流中,甲、乙被同伴选为交流对象的概率均为
,丙、丁、戊被同伴选为交流对象的概率相等,比赛由甲同学起稿建立模型.
①求该组第三次交流中甲被选择的概率;
②求第n次交流中甲被选择的概率(
,
).
(1)求随机变量X的分布列及数学期望
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b0919cf56a1b743189a019551b2d5a0.png)
(2)各市确定5人组队参赛,此次比赛规则是:小组内自行指定一名同学起稿建立模型,之后每轮进行两人单独交流.假设某队决定由A起稿建立模型,A从其他四名成员中选择一人B进行交流,结束后把成果交由B,然后B再从其他包括A在内的四个成员中选择一人进行交流
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181f3b0731a5bb74ca1865c2d2e613ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
①求该组第三次交流中甲被选择的概率;
②求第n次交流中甲被选择的概率(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a9fe3ae047fa8e7ada5325072a7a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b95079ade5ac98fc651fafc489761f.png)
您最近一年使用:0次
2024-05-16更新
|
1163次组卷
|
3卷引用:吉林省通化市梅河口市第五中学2023--2024学年高二下学期6月月考数学试题
吉林省通化市梅河口市第五中学2023--2024学年高二下学期6月月考数学试题辽宁省部分高中2023-2024学年高三下学期第三次模拟考试数学试题(已下线)专题02 高二下期末真题精选(压轴题 )-高二期末考点大串讲(人教A版2019)
解题方法
5 . 如图所示数阵,第
行共有
个数,第m行的第1个数为
,第2个数为
,第
个数为
.规定:
.
(2)求证:每一行的所有数之和等于下一行的最后一个数;
(3)从第1行起,每一行最后一个数依次构成数列
,设数列
的前n项和为
是否存在正整数k,使得对任意正整数n,
恒成立?如存在,请求出k的最大值,如不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdd4f87e7e7e32d723d7e97d980db42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0623207595425920f16e76a7f8f268b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29a285201fd7e0ad70fa7431cb89a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df0749c4129afc0c704155f522290b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae0b861522b18be1753acc4474cbc9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5222268dda9dcb9b660f3cbedbb37757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ef9ec4340eabb42722042c65cc60d8.png)
(2)求证:每一行的所有数之和等于下一行的最后一个数;
(3)从第1行起,每一行最后一个数依次构成数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e8660fb54ba32b037b392b75316087.png)
您最近一年使用:0次
2024-05-14更新
|
1004次组卷
|
2卷引用:吉林省长春市2024届向三第四次质量监测数学试卷
名校
解题方法
6 . 数列
中,从第二项起,每一项与其前一项的差组成的数列
称为
的一阶差数列,记为
,依此类推,
的一阶差数列称为
的二阶差数列,记为
,….如果一个数列
的p阶差数列
是等比数列,则称数列
为p阶等比数列
.
(1)已知数列
满足
,
.
(ⅰ)求
,
,
;
(ⅱ)证明:
是一阶等比数列;
(2)已知数列
为二阶等比数列,其前5项分别为
,求
及满足
为整数的所有n值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82c65a855b1eed9c43e6829f6c3bffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c599a8303d934678c8cae0ed864b776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c599a8303d934678c8cae0ed864b776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5452a758da0f722da03128a5eb3ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f88267cbc5e8e016b1a92bcf0fb27d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281cde49dcc279bdc6b2a99edafe19da.png)
(1)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3998df04d0a8ded946c3f39d545fdc7e.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f94c7bb2d2afc4196b15f6879ddf86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e9e4a01bdaa1f768225e055b6c6d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13df1f8f074ab49fc065ed0da2d5aff.png)
(ⅱ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0965cc6a58c25d9ba7876da319a8cae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
您最近一年使用:0次
2024-05-07更新
|
966次组卷
|
4卷引用:吉林市第一中学2024届高三高考适应性训练(二)数学试题
吉林市第一中学2024届高三高考适应性训练(二)数学试题2024届山东省潍坊市二模数学试题北京市中国人民大学附属中学2023-2024学年高二下学期统练3数学试题(已下线)专题04 高二下期末考前必刷卷02(提高卷)--高二期末考点大串讲(人教A版2019)
名校
7 . 函数
.
(1)讨论
的单调性;
(2)若函数
有两个极值点
,曲线
上两点
,
连线斜率记为k,求证:
;
(3)盒子中有编号为1~100的100个小球(除编号外无区别),有放回的随机抽取20个小球,记抽取的20个小球编号各不相同的概率为p,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec9e1834ec56f84cefda56e368436d.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd9e231b4d65720f9d41e17e09156849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca64171f1063ddf459dca2376060171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac673d8e3c0980182bc6ff4ef8d9d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b33939e7097602e4e47ebb936667af8.png)
(3)盒子中有编号为1~100的100个小球(除编号外无区别),有放回的随机抽取20个小球,记抽取的20个小球编号各不相同的概率为p,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb48728a0e00d1695b2e5cac24c73aa2.png)
您最近一年使用:0次
2024-04-22更新
|
1290次组卷
|
3卷引用:吉林省长春市东北师范大学附属中学2023-2024学年高三下学期第七次模拟考试数学试卷
吉林省长春市东北师范大学附属中学2023-2024学年高三下学期第七次模拟考试数学试卷重庆市第八中学2024届高三下学期高考强化训练一数学试题(已下线)压轴题08计数原理、二项式定理、概率统计压轴题6题型汇总
名校
8 . 以坐标原点为圆心的两个同心圆半径分别为
和
,
为大圆上一动点,大圆半径
与小圆相交于点
轴于
于
点的轨迹为
.
点轨迹
的方程;
(2)点
,若点
在
上,且直线
的斜率乘积为
,线段
的中点
,当直线
与
轴的截距为负数时,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fc7bca485a94013d4f7c9409c41282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8f37790681b8aa62ddbb44607426fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d218ae08b0d633d182a49ac15de9bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78eba6f91d97cea1dfd73bae53e7b689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b14fa212bbddd28310d463fcdef7e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09bf6ba623953df55eb869b2b363e39.png)
您最近一年使用:0次
2024-04-17更新
|
1038次组卷
|
4卷引用:吉林省长春市2024届向三第四次质量监测数学试卷
吉林省长春市2024届向三第四次质量监测数学试卷东北三省四城市联考暨沈阳市2024届高三下学期数学质量检测(二)(已下线)压轴题02圆锥曲线压轴题17题型汇总-4江苏省常州市华罗庚中学2024届高三下学期4月二模训练数学试卷
名校
解题方法
9 . 定义:若函数
的值域是定义域的子集,则称
是紧缩函数.
(1)试问函数
是否为紧缩函数?说明你的理由.
(2)若函数
是紧缩函数,求
的取值范围.
(3)已知常数
,函数
,
是紧缩函数,求
的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)试问函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef555a47258a9ce115189413c2e4ee63.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50ca1eddc194c3069d1caa62ff3a3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed228ab22e5d51eea0c12215e1dafe8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21cef43169928473f9145e7df54edef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2024-04-15更新
|
259次组卷
|
3卷引用:吉林省白山市抚松县第一中学2023-2024学年高一下学期4月月考数学试题
解题方法
10 . 短视频已成为当下宣传的重要手段,东北某著名景点利用短视频宣传增加旅游热度,为调查某天南北方游客来此景点旅游是否与收看短视频有关,该景点对当天前来旅游的500名游客调查得知,南方游客有300人,因收看短视频而来的280名游客中南方游客有200人.
(1)依据调查数据完成如下列联表,根据小概率值
的独立性检验,分析南北方游客来此景点旅游是否与收看短视颍有关联:单位:人
(2)为了增加游客的旅游乐趣,该景点设置一款5人传球游戏,每个人得到球后都等可能地传给其余4人之一,现有甲、乙等5人参加此游戏,球首先由甲传出.
(i)求经过
次传递后球回到甲的概率;
(ii)记前
次传递中球传到乙的次数为
,求
的数学期望.
参考公式:
,其中
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb95a9c95da5e03d680ac7bc601120c0.png)
附表:
(1)依据调查数据完成如下列联表,根据小概率值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83caa0ad94044a1e206b1cc0b3f85080.png)
游客 | 短视频 | 合计 | |
收看 | 未看 | ||
南方游客 | |||
北方游客 | |||
合计 |
(i)求经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
(ii)记前
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f503f0dec4cf2cc95ad9521c5eaf9f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb95a9c95da5e03d680ac7bc601120c0.png)
附表:
![]() | 0.1 | 0.05 | 0.01 | 0.005 | 0.001 |
![]() | 2.706 | 3.841 | 6.635 | 7.879 | 10.828 |
您最近一年使用:0次