U={x|x=2n-1,n∈n+,n小于等于7},A∩(CuB)={3,7},Cua∩B={9,13},CuA∩CuB=
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/10/01 00:30:25
U={x|x=2n-1,n∈n+,n小于等于7},A∩(CuB)={3,7},Cua∩B={9,13},CuA∩CuB={1,11},求A,B
U={x|x=2n-1,n∈n+,n小于等于7}={1,3,5,7,9,11,13}
A∩(CuB)={3,7}得3,7属于A,不属于B
Cua∩B={9,13}得9,13属于B,不属于A
CuA∩CuB={1,11}得A∪B={3,5,7,9,13}
可得A={3,7}或{3,5,7},B={9,13}或{5,9,13}
又,当A={3,7},B={9,13}时,A∪B≠{3,5,7,9,13}(舍)
当A={3,5,7},B={9,13}时,A∩(CuB)={3,5,7}≠{3,7}(舍)
当A={3,7},B={5,9,13}时,Cua∩B={5,9,13}≠{9,13}(舍)
故A={3,5,7},B={5,9,13}
A∩(CuB)={3,7}得3,7属于A,不属于B
Cua∩B={9,13}得9,13属于B,不属于A
CuA∩CuB={1,11}得A∪B={3,5,7,9,13}
可得A={3,7}或{3,5,7},B={9,13}或{5,9,13}
又,当A={3,7},B={9,13}时,A∪B≠{3,5,7,9,13}(舍)
当A={3,5,7},B={9,13}时,A∩(CuB)={3,5,7}≠{3,7}(舍)
当A={3,7},B={5,9,13}时,Cua∩B={5,9,13}≠{9,13}(舍)
故A={3,5,7},B={5,9,13}
已知全集u={x|x≤8,x∈N+},A∩CuB={2,8},CuA∩B={3,7},CuA∩CuB={1,5,6},求
设全集U={x∈N+ 丨x≤8}若A∩(CuB)={1.8},( CuA)U(CuB)={4,7}求集合A,B.
已知U={x是小于20的正质数},A∩CuB={3,5},B∩(CuA)={7,19},(CuA)∩(CuB)={2,1
设全集U={x∈N+|x≤8},若A∩(CuB)={2,8},(CuA)∪(CuB)={1,2,3,4,5,6,7,8}
设全集U={x I 0小于x小于10,x属于N},若A交B={3},A交CuB={1,5,7},(CuA)交(CuB)=
设A∩B={3},(CuA)∩B={4,6,8},A∩(CuB)={1,5},(CuA)∪(CuB)={x∈N*|x<1
设全集U={x|x≤7,x∈N},已知(CuA)∩B={1,6},A∩(CuB)={2,3},Cu(AuB)={0,5}
高以数学.集合设全集U={X|X≤8,X∈N}.若A∩(CuB)={1,8},(CuA)∩B={2,6},(CuA)∩(
1.设U=R集合A={X/X<-1}集合B={X/-2≤X<3}求CuA∪CuB CuA∩CuB
设集合U={x|0<x<10,x∈N*},若A∩B={3} .A∩∁uB={1,5,7},CuA∩CuB={
设U={1,2,3,4,5,6,7,8},A={3,4,5},B={4,7,8},求CuA,CuB,(CuA)∩(CuB
⒈ 已知U={X|1≤X≤8 X∈2} A∩(CuB)={1,8} CuA∩B={2,6} CuA∩(CuB)={4,7