设=[a12a2J,b=[2b2b为列 向量,λ是一个数,则有 (1)2+b=4+h:a2+h2,n+bn (2)Aa=a1,Aan2,… (3)ab-[a b2 a1b1+a2b2+…+anb a, b, a, b b (4)ab a b设 ， 为列 向量，是一个数，则有 (1) (2) (3) (4)  1 2 , , ,  T a = a a an  1 2 , , ,  T b = b b bn  1 1 2 2 , , ,  T n n a + b = + + + a b a b a b  1 2 , ,  T n     a = a a a   1 2 1 2 1 1 2 2 , , , n n n n b b a a a a b a b a b b     = = + + +         T a b             =             = n n n n n n n n a b a b a b a b a b a b a b a b a b b b b a a a          1 2 2 1 2 2 2 1 1 1 2 1 1 2 2 1 [ , , , ] T ab