已知函数fm(x)的定义域为实数集R,满足fm(x)={1,x∈M(M是R的非空真子集) 0,x不属于M 0,x不∈M在R上有两个非空真子集A,B,且A∩B=空集,则F(X)=(fA∪B(X)+1)/(fA(x)+fB(x)+1)的值域为什么是{1}
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![已知函数fm(x)的定义域为实数集R,满足fm(x)={1,x∈M(M是R的非空真子集) 0,x不属于M 0,x不∈M在R上有两个非空真子集A,B,且A∩B=空集,则F(X)=(fA∪B(X)+1)/(fA(x)+fB(x)+1)的值域为什么是{1}](/uploads/image/z/10210249-1-9.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0fm%28x%29%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E4%B8%BA%E5%AE%9E%E6%95%B0%E9%9B%86R%2C%E6%BB%A1%E8%B6%B3fm%28x%29%3D%7B1%2Cx%E2%88%88M%28M%E6%98%AFR%E7%9A%84%E9%9D%9E%E7%A9%BA%E7%9C%9F%E5%AD%90%E9%9B%86%EF%BC%89+0%2Cx%E4%B8%8D%E5%B1%9E%E4%BA%8EM+0%2Cx%E4%B8%8D%E2%88%88M%E5%9C%A8R%E4%B8%8A%E6%9C%89%E4%B8%A4%E4%B8%AA%E9%9D%9E%E7%A9%BA%E7%9C%9F%E5%AD%90%E9%9B%86A%2CB%2C%E4%B8%94A%E2%88%A9B%3D%E7%A9%BA%E9%9B%86%2C%E5%88%99F%28X%29%3D%EF%BC%88fA%E2%88%AAB%28X%29%2B1%29%2F%28fA%28x%29%2BfB%28x%29%2B1%29%E7%9A%84%E5%80%BC%E5%9F%9F%E4%B8%BA%E4%BB%80%E4%B9%88%E6%98%AF%EF%BD%9B1%EF%BD%9D)
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