由已知, A(a1,a2,a3) = (a1,a2,a3) K
K =
1 0 0
2 2 3
3 3 -4
所以 |A| |a1,a2,a3| = |a1,a2,a3| |K|
由于 a1,a2,a3 线性无关, 所以 |a1,a2,a3|≠0
所以 |A| = |K| = -17
由已知, A(a1,a2,a3) = (a1,a2,a3) K
K =
1 0 0
2 2 3
3 3 -4
所以 |A| |a1,a2,a3| = |a1,a2,a3| |K|
由于 a1,a2,a3 线性无关, 所以 |a1,a2,a3|≠0
所以 |A| = |K| = -17