계산 행렬식 1, 2, 2...2, 2, 2...2, 2, 3...2........................................................2, 2, 2...n.

계산 행렬식 1, 2, 2...2, 2, 2...2, 2, 3...2........................................................2, 2, 2...n.

Dn
RI - r 2, i = 1, 3, 4,..........................................................
- 1, 0... 0
2, 2, 2...
0, 0, 1... 0.
...
0, 0... - 2.
= - 2 (n - 2)!