A的特征值为 2,2,-4
所以 |A| = 2*2*(-4) = -16.
| (-1/2A*)^-1 |
= | (-1/2 |A|A^-1)^-1 |
= | (8A^-1)^-1|
= | (1/8) A|
= (1/8)^3 |A|
= -1/32.
A的特征值为 2,2,-4
所以 |A| = 2*2*(-4) = -16.
| (-1/2A*)^-1 |
= | (-1/2 |A|A^-1)^-1 |
= | (8A^-1)^-1|
= | (1/8) A|
= (1/8)^3 |A|
= -1/32.