(2 -1 -1 1; 1 1 -2 1; 3 6 -9 7 )化为最简形矩阵
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(2 -1 -1 1; 1 1 -2 1; 3 6 -9 7 )化为最简形矩阵
(2 -1 -1 1; 1 1 -2 1; 3 6 -9 7 )化为最简形矩阵
(2 -1 -1 1; 1 1 -2 1; 3 6 -9 7 )化为最简形矩阵
r1-2r2,r3-3r2
0 -3 3 -1
1 1 -2 1
0 3 -3 4
r3+r1
0 -3 3 -1
1 1 -2 1
0 0 0 3
r3*(1/3),r1+r3,r2-r3
0 -3 3 0
1 1 -2 0
0 0 0 1
r1*(-1/3),r2-r1
0 1 -1 0
1 0 -1 0
0 0 0 1
r1r2
1 0 -1 0
0 1 -1 0
0 0 0 1