Question

求下列矩阵的逆矩阵!1 2 -13 4 -25 -4 1

Answer 1

1 2 -1 1 0 0 1 2 -1 1 0 0 1 2 -1 1 0 0 1 0 0 -2 1 0 1 0 0 -2 1 0 1 0 0 -2 1 0

3 4 -2 0 1 0 -2 1 -3 1 0 -2 1 -3 1 0 0 -2 1 -3 1 0 0 -2 0 13 -6 0 1 0 -13/2 3 -1/2

5 -4 1 0 0 1 0 -14 6 -5 0 1 0 0 -1 16 -7 1 0 0 -1 16 -7 1 0 0 -1 16 -7 1 0 0 1 -16 7 -1

即最后答案为 -2 1 0

-13/2 3 -1/2

-16 7 -1