1 . 设
、
、
、
,称
为二阶方阵,全体二阶方阵构成的集合记为
,定义
中的两种运算:①
,
,
;②设
,
,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a876ecb804eb0553c246e5fcc40b708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833a07e00e7ba9e23b1d6ef7ede078d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833a07e00e7ba9e23b1d6ef7ede078d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8eda61001da71270bdca6586893a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00805ad79d2941bc7e16af7bf6bdb42b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833a07e00e7ba9e23b1d6ef7ede078d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3963548c61d6aa7107f6c4fa8460b246.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() ![]() ![]() |
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2022高三·全国·专题练习
2 . 数列{an}各项均为实数,对任意n∈N*满足an+3=an,且行列式
=c为定值,则下列选项中不可能的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a5b1e6901a7946441e279e7ba1ed36.png)
A. ![]() | B. ![]() |
C. ![]() | D. ![]() |
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3 . 解关于
,
的二元一次方程组
,并对解的情况进行讨论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6bea6eaa806d4cfa739633bc4d9f827.png)
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4 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26f813ab4df719c86ecb2d1b5895fb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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2021-10-12更新
|
171次组卷
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3卷引用:上海市2022届高三上学期一模暨春考模拟卷(一)数学试题
上海市2022届高三上学期一模暨春考模拟卷(一)数学试题(已下线)课时29 二、三阶行列式-2022年高考数学一轮复习小题多维练(上海专用)上海市华东师范大学附属东昌中学2022届高三下学期阶段检测数学试题
5 . 方程组
无解,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70907f40d17609b4b5ff6a73cb67cb3.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cdef58c3d8f3d50088ecd27e96f05b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70907f40d17609b4b5ff6a73cb67cb3.png)
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2021-01-25更新
|
161次组卷
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4卷引用:上海市春季2021届高三高考数学试题
上海市春季2021届高三高考数学试题(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)(已下线)专题03 幂指对函数必考题型分类训练-1沪教版(2020) 25天高考冲刺 双新双基百分百9
6 . 已知
,矩阵
的一个特征值为2.
(1)求
的值;
(2)求矩阵A的逆矩阵
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb66f4db41478c23128adc14f2796556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c472b9ec817001de58e85bfcad1a9af2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)求矩阵A的逆矩阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a84646168f0afc4380043a52b818c35.png)
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7 . 用行列式解关于
,
的二元一次方程组,并对解的情况进行讨论:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6b5cfb1acd789b6831a511770353070.png)
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20-21高三上·上海浦东新·阶段练习
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8 . 已知空间向量
和
,设
和
,则 “
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee50b88a09d1c95220c2cef7db78c69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b843e1a8c23b2baf20b8b115be1b67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1939aa72bdc3bf930e7b59ed6a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd4bbad7ec067d5312042039be77a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4a1707f3111423a3e267eafdfebebb.png)
A.充分非必要条件 | B.必要非充分条件 |
C.充分必要条件 | D.既非充分又非必要条件 |
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9 . 在
中,角A、B、C、所对边分别为a、b、c,已知
,
,
,则
的面积为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb31d065d47ae56bc0f7203cfe6f47a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2020-09-25更新
|
273次组卷
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2卷引用:上海市七宝中学2021届高三上学期摸底数学试题
10 . 已知矩阵A=
,点P(3,-1)在矩阵A对应的变换作用下得到点P′(3,5).
(1)求a和b的值;
(2)求矩阵A的特征值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f1a8bc297e3b0eb56c7428f7381157.png)
(1)求a和b的值;
(2)求矩阵A的特征值.
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