Txx的知识精选

已知*S={1,2},*T={x|(x-1)(x-3)=0},那么S∪T=A.Æ             ...
问题详情:已知*S={1,2},*T={x|(x-1)(x-3)=0},那么S∪T=A.Æ                          B.{1}C.{1,2}                          D.{1,2,3}【回答】D知识点:*与函数的概念题...
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