(1.1 )给定三个矢量A、B和C如下:-|||-=(e)_(x)+(e)_(y)2-(e)_(2)3-|||-=-(e)_(y)+(e)_(2)-|||-=(e)_(x)5-(e)_(2)2-|||-:(1)eA;(2) |A-B| ;(3)A·B;(4)θA B;(5)A在B上的分量;(6) times C;-|||-(7) cdot (Btimes C) 和 (Atimes B)cdot C ;(8) (Atimes B)times C 和 times (Btimes C)