A={5,Log2 (a+3) }B={a,b}若A∩B=2则A∪B
2个回答
A={5,Log2 (a+3) }B={a,b}
若A∩B=2
Log2 (a+3)=2,
a+3=4,a=1,b=2
则A∪B={5,2,1}
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