国开在线答案
- 2024-03-05 [单选] 三阶行列式的余子式M23=（ ）．file-storage/1493838
- 2024-03-05 [单选] 设，则BA-1（ ）.file-storage/1493849
- 2024-03-05 [单选] 二阶矩阵（ ）．file-storage/1493895
- 2024-03-05 [单选] 向量组的秩为（ ）．file-storage/1493908
- 2024-03-05 [单选] 向量组的极大线性无关组是（ ）．file-storage/1493922
- 2024-03-05 [单选] 方程组的解为（ ）．file-storage/1493945
- 2024-03-05 [单选] 若为对称矩阵，则a=-3．（ ）file-storage/1493954
- 2024-03-05 [单选] 设，则．（ ）file-storage/1493960
- 2024-03-05 [单选] 设行列式，则 file-storage/1493968
- 2024-03-05 [单选] 若行列式，则a= ．file-storage/1493973