设f:x→y=2x是A→B的映射,已知集合B={0,1,2,3,4},则A满足( )
A.A={1,2,4,8,16} | B.A={0,1,2,log23} |
C.A{0,1,2,log23} | D.不存在满足条件的集合 |
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设f:x→y=2x是A→B的映射,已知集合B={0,1,2,3,4},则A满足( )
A.A={1,2,4,8,16} | B.A={0,1,2,log23} |
C.A{0,1,2,log23} | D.不存在满足条件的集合 |
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