题目内容
(1)A=B_____________________AB;
(2)AB___________________BA.
思路分析:如图所示
答案:
(1)A=B_________AB;
(2)AB__________BA.
从“”“”与 “”中选出适当的符号填空(为全集,为的子集):
(1)___________.
(2)___________.
(1)A=B__________AB;
(2)AB__________UB UA.