(1)----:A=[-1,3],A∩B=[0,3],说明B的下确界为3 (inf B=3),即m-2=3,m=5,即B=[3,7]即:m=5
(2)---:CrB=(-∞ ,m-2)U(m+2,+∞ ),若A包含于CrB,即 :3