⑩天掌 Teaching Plan on Advanced Mathematics 数量积符合下列运算规律: (1)交换律:d·b=ba (2)分配律(+b)·C=a·￠+b·c; (3)若为数(A)·b=a·(b)=(a·b), 若九、p为数:()·()=(d·b)Tianjin Polytechnic University Teaching Plan on Advanced Mathematics 数量积符合下列运算规律： （1）交换律： a b b a;      =  （2）分配律： (a b) c a c b c;        +  =  +  （3）若  为数： ( a) b a ( b) (a b),         =   =   若  、  为数： ( a) ( b) (a b).        =  