(A u B) n (A u C) = A n (B u C)这个命题是真命题吗?
问题描述:
(A u B) n (A u C) = A n (B u C)这个命题是真命题吗?
我已经知道了,(A u B) n (A u C) = A u (B n C)
答
不是. 应该是(A u B) n (A u B) =A u (B n C)