A={x|x≤-3或X>0}B={X|-4<X≤1}U=R 求AnB (CuA)UB An(CuB)

问题描述:

A={x|x≤-3或X>0}B={X|-4<X≤1}U=R 求AnB (CuA)UB An(CuB)
(CuA)U(CuB) Cu(AUB)
1个回答 分类:数学 2014-11-06

问题解答:

我来补答
AnB=(-4,-3]U(0,1]
(CuA) UB=(-4,1]
An(CuB)=(-无穷,-3]U(0,+无穷)
(CuA)U(CuB) =Cu(AnB)=(-无穷,-4]U(-3,0]U(1,+无穷)
Cu(AUB)=∅
 
 
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