综上,m的范围为m<0.
设全集U=R,A={X|3m-1
设全集U=R,A={X|3m-1
数学人气:957 ℃时间:2019-10-30 13:08:52
优质解答
当m=-1/2时,A=={X|3m-1 当m不等于-1/2时,B真含于(CuA),那么3m-1<-1,即m<0且m不等于-1/2,
综上,m的范围为m<0.
综上,m的范围为m<0.
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