名校
1 . 设数阵
,其中
、
、
、
.设
,其中
,
且
.定义变换
为“对于数阵的每一行,若其中有
或
,则将这一行中每个数都乘以
;若其中没有
且没有
,则这一行中所有数均保持不变”(
、
、
、
).
表示“将
经过
变换得到
,再将
经过
变换得到
、
,以此类推,最后将
经过
变换得到
”,记数阵
中四个数的和为
.
(1)若
,写出
经过
变换后得到的数阵
;
(2)若
,
,求
的值;
(3)对任意确定的一个数阵
,证明:
的所有可能取值的和不超过
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/118fda38f1089b957ed60695e37a536c.png)
![](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/80dfe04216139283a69617e9dad8048f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1f55a7cb35277e770cf834d0daee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75e807cfe386ca9281b99ddf74ffc16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada32feac648a845a4df365354cd196e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c866e176c39fd314d3cd3bbe52ba8ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13457c887234afca68b4ab6be353481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53fc303cfac1c7534451fb0789e68340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53fc303cfac1c7534451fb0789e68340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b081228ddb76ebe198cdb4e69f2785d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2321ec2ceeba4ca1168f3c64bcad3da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813ba311354d00f71d2115a560d12b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7356ec98b600ece41f3a6b4bc26a7d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4891337ce2ce5c1f700b8824a03cd83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9721059d158853671eaf19e39769b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747f43f06177d471d83cda317c39d105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8db4b168ddbcba90ac9b31d36a0432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/221f88f10c065cf9c855369540113c9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15145fa7ce87d4730373560c26d292bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0dbb44d7459e2c69c046775664c21d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0dbb44d7459e2c69c046775664c21d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8466ad670889f417cd21e72f41628a1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85351e9d97942d0291e0c4f784a69ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7356ec98b600ece41f3a6b4bc26a7d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8d70c89336011fb7ba4006a16f0f55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f58b8408ad372250925ef59146017c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b69876a0ef00bf3844058e06443013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8466ad670889f417cd21e72f41628a1.png)
(3)对任意确定的一个数阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7356ec98b600ece41f3a6b4bc26a7d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8466ad670889f417cd21e72f41628a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
您最近一年使用:0次
2020-04-16更新
|
467次组卷
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5卷引用:北京市第十二中学2020-2021学年高一3月月考数学试题
2 . 若复数
满足
,其中
是虚数单位,则
的虚部为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/006c521d2af43ef61f2dcaacb5382e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e9585a1da28d403536ea48b4c37a3e.png)
您最近一年使用:0次
2019-11-09更新
|
441次组卷
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8卷引用:专题2.4 复数【专项训练】-2020-2021学年高一数学下学期期末专项复习(沪教版2020)
(已下线)专题2.4 复数【专项训练】-2020-2021学年高一数学下学期期末专项复习(沪教版2020)上海市复旦大学附属中学2020-2021学年高二上学期期末数学试题上海市致远高级中学2020-2021学年高二上学期期末数学试题上海市建平中学2018-2019学年高三上学期12月月考数学试题上海市建平中学2019-2020学年高三上学期10月月考数学试题2020届上海市高三下学期高考预测数学试题(已下线)热点05 数列与不等式-2021年高考数学【热点·重点·难点】专练(上海专用)(已下线)热点04 平面向量、复数-2021年高考数学【热点·重点·难点】专练(上海专用)
3 . 定义运算
,则符合条件
的复数
为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ffd664f7aca7c3e36eca887dab7bce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a14261bf16490f05ad8c3794d765f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
854次组卷
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9卷引用:【新教材精创】12.2 复数的运算 练习
(已下线)【新教材精创】12.2 复数的运算 练习山西省怀仁市2020-2021学年高二下学期期中数学(文)试题第五章 复数章末检测卷-2021-2022学年高一下学期数学北师大版(2019)必修第二册2014-2015学年山东省华侨中学高二4月月考理科数学试卷2015-2016学年内蒙古准格尔旗世纪中学高二下第一次月考理科数学卷湖北省部分重点高中2019-2020学年高三11月期中联考数学理科试题甘肃省庆阳市宁县第二中学2019-2020高二下学期4月线上测试数学(理)试题江西省宜春市上高县第二中学2019-2020学年高二(6月)第二次月考数学(理)试题江西省抚州市南城县第二中学2021-2022学年高二下学期第二次(月考)数学(理)试题
4 . 对于集合A,定义了一种运算“
”,使得集合A中的元素间满足条件:如果存在元素
,使得对任意
,都有
,则称元素e是集合A对运算“
”的单位元素.例如:
,运算“
”为普通乘法;存在
,使得对任意
,都有
,所以元素1是集合R对普通乘法的单位元素.下面给出三个集合及相应的运算“
”:
①
,运算“
”为普通减法;
②
,运算“
”为矩阵加法;
③
(其中M是任意非空集合),运算“
”为求两个集合的交集.
其中对运算“
”有单位元素的集合序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c857a4984543f15c4637084f0e0db0d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc020b0997a2f37b214718112b79d8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c88aa4c16567c4cfda0fe4df69751a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843c3f388a75bf981c11ca947a86e5fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d15b0b4873f8b9320f22437525bc96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845198de78fd8737a5bce7178622ca36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843c3f388a75bf981c11ca947a86e5fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c01a4595d9129a944090973728205a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8a4e50298e5cc496e0d4e00d84403ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
其中对运算“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
A.①② | B.①③ | C.①②③ | D.②③ |
您最近一年使用:0次
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6卷引用:第1章《集合》 培优测试卷(一)-2021-2022学年高一数学上册同步培优训练系列(苏教版2019)
(已下线)第1章《集合》 培优测试卷(一)-2021-2022学年高一数学上册同步培优训练系列(苏教版2019)2015届上海市闸北区高三上学期期末练习理科数学试卷2015届上海市闸北区高三上学期期末练习文科数学试卷上海市静安区2017-2018学年度第一学期高中教学质量检测高三数学试卷上海市复旦大学附属中学2019届高三高考4月模拟试卷数学试题(已下线)课时28 矩阵的概念及运算-2022年高考数学一轮复习小题多维练(上海专用)