1 .
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c36a3eb2d02bc3bb93f28dbcf7215f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
2 . 若行列式
中,
的代数余子式大于0,则
满足的条件是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51256f1fecb0bba2762cc2fc9ff3bcbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35aea718ef448f4dd96ff22dca1f9628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
3 . 求矩阵
与
的乘积
及
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925a209b5abd178c50d3ba749c8be36b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a72cfa3fc207c814c15d0259503f40f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
您最近一年使用:0次
2019-11-10更新
|
75次组卷
|
3卷引用:沪教版 高二年级第一学期 领航者 第九章 9.2矩阵的运算(2)
4 .
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de51bb643f9c73a9941a8923f1a5f212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cd35b3f66cdeae8d9998d824194308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
您最近一年使用:0次
2019-11-10更新
|
45次组卷
|
2卷引用:沪教版 高二年级第一学期 领航者 第九章 9.2矩阵的运算(2)
5 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb78557bf88f792d3b754abd3113ef9.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb78557bf88f792d3b754abd3113ef9.png)
您最近一年使用:0次
6 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84aeab74fd543ae24ef47d2b74aec34.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84aeab74fd543ae24ef47d2b74aec34.png)
您最近一年使用:0次
7 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c190a78c61dc912a59225e9daeaca28.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c190a78c61dc912a59225e9daeaca28.png)
您最近一年使用:0次
8 . 甲、乙、丙三位同学语文、数学、外语三门课的平时、期中、期末成绩如下表所示,如果总评成绩按平时
、期中
、期末
计算,试用矩阵方法求出这三位同学每门课的总评成绩.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23466fd31d0666cb9f65dced41188359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4ec5b9d2f5dbd6ec1cac34dbd8e547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc00118b6316f277160328cf6a27a5e.png)
语文 | 数学 | 外语 | |||||||
平时 | 期中 | 期末 | 平时 | 期中 | 期末 | 平时 | 期中 | 期末 | |
甲 | |||||||||
乙 | |||||||||
丙 |
您最近一年使用:0次
9 . 设
,
,若
,求矩阵
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dac82aa1254f3a7acd6e85de9eea8be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf51734bf818ffefb7ae1b52ad22e25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e820e4d25ce08bbb17656a7eedb9f10e.png)
您最近一年使用:0次
10 . 已知
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d1578ca69c499a25df59f24a4f213dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c54b0a49c3a554ce899536b1bb3dd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99639f7163f03c0d33d3f045b2d38cd.png)
您最近一年使用:0次