# ch8.problem2 by 김도형

## 1296 days ago by dhkim

M=matrix(QQ,4,7,[1,-1,0,1,2,1,1,0,2,1,1,1,2,2,0,1,1,1,2,2,3,1,0,1,1,2,-1,0]) print(M) print a=M.rref() print a
 [ 1 -1 0 1 2 1 1] [ 0 2 1 1 1 2 2] [ 0 1 1 1 2 2 3] [ 1 0 1 1 2 -1 0] [ 1 0 0 0 -1 -3 -4] [ 0 1 0 0 -1 0 -1] [ 0 0 1 0 1 -2 0] [ 0 0 0 1 2 4 4] [ 1 -1 0 1 2 1 1] [ 0 2 1 1 1 2 2] [ 0 1 1 1 2 2 3] [ 1 0 1 1 2 -1 0] [ 1 0 0 0 -1 -3 -4] [ 0 1 0 0 -1 0 -1] [ 0 0 1 0 1 -2 0] [ 0 0 0 1 2 4 4]