-1 -1 +3 det E - A = ( + 3)( + 4)( + 1) 1 = -3 2 = -4 3 = -1 4 -5 4 1 -5 4 2 -1 2 2 - 4 2 ( A - 2 E )( A - 3 E ) 1 1 1 1 1 - 2 i = 1, z1i = = = (1 - 2 )(1 - 3 ) ( -3 + 4)(-3 + 1) 19 -2 4 -2 2 -4 2 1 -2 1 4 -8 4 = = -1 2 -1