A.1 | B.0 | C.-2 | D.-3 |
A.A=B | B.AB |
C.BA | D.A∩B=⌀ |
A.当a≠0时,集合A是有限集 |
B.当a=b=0时,集合A是无限集 |
C.当a=0时,集合A是无限集 |
D.当a=0,b≠0时,集合A是空集 |
A | {1,2,3,4} | {-1,1} | {-4,8} | {-1,0,1} |
B | {2,3,6} | {-1,1} | {-4,-2,0,2} | {-2,-1,0,1} |
A⊕B | {1,4,6} | ∅ | {-2,0,2,8} | {-2} |
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