列增广矩阵,
2 1 0 | 5
1 0 -3 | 14
0 5 -1 | 10
解法顺序为,(括号内是行列式的行)
(2)-(1)/2
(3)+(2)*10
(3)除-31,
(2)+(3)*3
(2)除-0.5
(1)-(2)之后除2
得,59/31
37/31
-125/31
列增广矩阵,
2 1 0 | 5
1 0 -3 | 14
0 5 -1 | 10
解法顺序为,(括号内是行列式的行)
(2)-(1)/2
(3)+(2)*10
(3)除-31,
(2)+(3)*3
(2)除-0.5
(1)-(2)之后除2
得,59/31
37/31
-125/31