答:A,2a+1<=x<=3a-5B,x<-1或者x>161)A∩B=空集,则有两种情况:一是A本身为空集,则2a+1>3a-5,解得:a<6二是:-1<=2a+1<=x<=3a-5<=16解得:a>=-1并且a<=7所以:-1<=a<=7综上所述,a<=72)A包含于(A∩B)时:说明:A∩B=A所以:A是空集时,a<6或者x>=2a+1>16,则a>15/2或者x<=3a-5<-1,则a<4/3综上所述,a<6或者a>15/2