已知集合U={x∈R|1<x≤7},A={x∈R|2≤x<5},B={x∈R|3≤x<7}求(1)(CUA)∩(CUB),(2)CU(A∩B),(3)(CUA)∪(CUB),(4)CU(A∩B)

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已知集合U={x∈R|1<x≤7},A={x∈R|2≤x<5},B={x∈R|3≤x<7}求(1)(CUA)∩(CUB),(2)CU(A∩B),(3)(CUA)∪(CUB),(4)CU(A∩B)

已知集合U={x∈R|1<x≤7},A={x∈R|2≤x<5},B={x∈R|3≤x<7}求(1)(CUA)∩(CUB),(2)CU(A∩B),(3)(CUA)∪(CUB),(4)CU(A∩B)
已知集合U={x∈R|1<x≤7},A={x∈R|2≤x<5},B={x∈R|3≤x<7}
求(1)(CUA)∩(CUB),(2)CU(A∩B),(3)(CUA)∪(CUB),(4)CU(A∩B)

已知集合U={x∈R|1<x≤7},A={x∈R|2≤x<5},B={x∈R|3≤x<7}求(1)(CUA)∩(CUB),(2)CU(A∩B),(3)(CUA)∪(CUB),(4)CU(A∩B)
U应该是C的误打吧.
⑴⑵.(CUA)∩(CUB)=C∪(A∩B)=C=(1,7].
(3)(CUA)∪(CUB)=C∪A∪B=C=(1,7].
(4)CU(A∩B)=C=(1,7].
U没有打错,那就是打漏了C.请补上!