Đề bài
Xác định các tập hợp sau:
\(\eqalign{ & a)\,\,I \cap R\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,b)\,I \cap Q \cr & c)\,Z \cap Q\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,c)\,I \cap Z \cr} \)
Lời giải chi tiết
\(\eqalign{ & a)I \cap R = I \cr & b)I \cap Q = \phi \cr & c)Z \cap Q = Z \cr & d)I \cap Z = \phi \cr} \)
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