給定行列式|aij|=,Aij為元素aij的代數(shù)余子式(i,j=1,2,…,5),求:
(1)|aij| (2)A34 (3)A32+3A33+2A35 (4)A15 (5)A11+A12+A13
設(shè)f(x)=x2-5x+3,,證明f(A)=0.