1.设集合A={x丨丨x-a丨<1,x∈R},B={x丨丨x-b丨>2,x∈R},若A包含于B,则实数a,b必须满足?丨a-b丨≥3.2.已知集合A={x丨丨x丨≤2,x∈R},B={x丨√ ̄x≤4,x∈Z},则A∩B=?.3.设集合A={1,2,3,4,5,6},B={
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![1.设集合A={x丨丨x-a丨<1,x∈R},B={x丨丨x-b丨>2,x∈R},若A包含于B,则实数a,b必须满足?丨a-b丨≥3.2.已知集合A={x丨丨x丨≤2,x∈R},B={x丨√ ̄x≤4,x∈Z},则A∩B=?.3.设集合A={1,2,3,4,5,6},B={](/uploads/image/z/11645724-12-4.jpg?t=1.%E8%AE%BE%E9%9B%86%E5%90%88A%3D%EF%BD%9Bx%E4%B8%A8%E4%B8%A8x-a%E4%B8%A8%EF%BC%9C1%2Cx%E2%88%88R%EF%BD%9D%2CB%3D%EF%BD%9Bx%E4%B8%A8%E4%B8%A8x-b%E4%B8%A8%EF%BC%9E2%2Cx%E2%88%88R%EF%BD%9D%2C%E8%8B%A5A%E5%8C%85%E5%90%AB%E4%BA%8EB%2C%E5%88%99%E5%AE%9E%E6%95%B0a%2Cb%E5%BF%85%E9%A1%BB%E6%BB%A1%E8%B6%B3%3F%E4%B8%A8a-b%E4%B8%A8%E2%89%A53.2.%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%EF%BD%9Bx%E4%B8%A8%E4%B8%A8x%E4%B8%A8%E2%89%A42%2Cx%E2%88%88R%EF%BD%9D%2CB%3D%EF%BD%9Bx%E4%B8%A8%E2%88%9A%EF%BF%A3x%E2%89%A44%2Cx%E2%88%88Z%EF%BD%9D%2C%E5%88%99A%E2%88%A9B%3D%3F.3.%E8%AE%BE%E9%9B%86%E5%90%88A%3D%EF%BD%9B1%2C2%2C3%2C4%2C5%2C6%EF%BD%9D%2CB%3D%EF%BD%9B)
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