见面课
1. 下列排列是5阶偶排列的是24315

1. ![image.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/bd44bd48ed7d4fb380af9a54c01d0e60.png)4

1. A、B为n阶方阵,则下列各式中成立的是![image.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/27c76d34704043f9917892454f3cddb7.png)

1. ![image.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/2eaa111f5b8844469178b92c590200d0.png)![image.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/0c548f0f08e74636bdb7574f4ae3e7cb.png)

1. 克拉默法则可用于解任意的线性方程组.

1. 齐次线性方程组一定有零解,可能没有非零解

1. 任何阶数的行列式都可以用对角线法则计算其值.

1. 两个零矩阵必相等.

1. 两个单位矩阵必相等.

1. 设D是n阶行列式,则D的第2行元素与第三行元素对应的代数余子式之积的和为0,![image.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/9e4c78a227084aeab25df50f67b5e0ef.png)

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