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1.det(A B)=detA detB
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2.det那
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3.det inop light
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4.4 b different b b types b b of b b computers b with b their b functions
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5.A={{a,{b}},c,{c},{a,b}},B={{a,b},c,{b}}求 AÈB,AÇB,A-B,AÅB
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6.estas son las b diferencias b b entre b el b agua b b carbonatada b b y b b agua b
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7.设A={a,b,{a,b},c},B={b,{b,c},{a}},求A-B,B-A,A B.设A={a,b,{a,b},c},B={b,{b,c},{a}},求A-B,B-A,A B.
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8.A(a>(b)>(cA、(c)>(b)>(B、(b)>(a>(c)C、(a)>(c>(b
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9.( A∩B)∪B = ( )
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10.已知A为集合,|A|=4,|B|=2,|A × A| = ( ),|A × B| = ( ), |B × B| = ( ).