已知集合A={x丨a<x≤a+8},B={x丨8-b<x<b},M={x丨x<-1或x>5},N={x丨0≤x≤9},全集U=R1 若A∪M=R,求实数a的取值范围2 若B∪(M的补集)=B,求实数b的取值范围3 若A∩N=A,求实数a的取值范围
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![已知集合A={x丨a<x≤a+8},B={x丨8-b<x<b},M={x丨x<-1或x>5},N={x丨0≤x≤9},全集U=R1 若A∪M=R,求实数a的取值范围2 若B∪(M的补集)=B,求实数b的取值范围3 若A∩N=A,求实数a的取值范围](/uploads/image/z/13905745-25-5.jpg?t=%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%EF%BD%9Bx%E4%B8%A8a%EF%BC%9Cx%E2%89%A4a%2B8%EF%BD%9D%2CB%3D%EF%BD%9Bx%E4%B8%A88-b%EF%BC%9Cx%EF%BC%9Cb%EF%BD%9D%2CM%3D%EF%BD%9Bx%E4%B8%A8x%EF%BC%9C-1%E6%88%96x%EF%BC%9E5%EF%BD%9D%2CN%3D%EF%BD%9Bx%E4%B8%A80%E2%89%A4x%E2%89%A49%EF%BD%9D%2C%E5%85%A8%E9%9B%86U%3DR1+%E8%8B%A5A%E2%88%AAM%3DR%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B42+%E8%8B%A5B%E2%88%AA%EF%BC%88M%E7%9A%84%E8%A1%A5%E9%9B%86%EF%BC%89%3DB%2C%E6%B1%82%E5%AE%9E%E6%95%B0b%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B43+%E8%8B%A5A%E2%88%A9N%3DA%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4)
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