设全集U={x│x∈N*,x≤a},集合P={1,2,3},Q={4,5,6},则"a∈[6,7)"是“Cu(P)=Q”的──── 条件.
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![设全集U={x│x∈N*,x≤a},集合P={1,2,3},Q={4,5,6},则](/uploads/image/z/14922655-7-5.jpg?t=%E8%AE%BE%E5%85%A8%E9%9B%86U%3D%7Bx%E2%94%82x%E2%88%88N%2A%2Cx%E2%89%A4a%7D%2C%E9%9B%86%E5%90%88P%3D%7B1%2C2%2C3%7D%2CQ%3D%7B4%2C5%2C6%7D%2C%E5%88%99%22a%E2%88%88%5B6%2C7%29%22%E6%98%AF%E2%80%9CCu%EF%BC%88P%EF%BC%89%3DQ%E2%80%9D%E7%9A%84%E2%94%80%E2%94%80%E2%94%80%E2%94%80+%E6%9D%A1%E4%BB%B6.)
设全集U={x│x∈N*,x≤a},集合P={1,2,3},Q={4,5,6},则"a∈[6,7)"是“Cu(P)=Q”的──── 条件.
设全集U={x│x∈N*,x≤a},集合P={1,2,3},Q={4,5,6},则"a∈[6,7)"是“Cu(P)=Q”的──── 条件.
设全集U={x│x∈N*,x≤a},集合P={1,2,3},Q={4,5,6},则"a∈[6,7)"是“Cu(P)=Q”的──── 条件.
充要条件
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设全集U=R,集合A=(x|-5