解: 因为 |B|=-2, 所以 |B*| = |B|^(3-1) = (-2)^2 = 4|(2AB*)^(-1)A|= | (1/2) (B*)^-1 A^-1 A|= (1/2)^3 |(B*)^-1|= (1/8) (1/|B*|)= (1/8)*(1/4)= 1/32.满意请采纳^_^
