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  • 11-04-2024
  • Mathematics
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Let A be a nonempty subset of Rⁿ. If the characteristic function of A is continuous, prove that bdA= phi, where f:Rⁿ→R is defined by f(vec(u))=1 if vec(u)inA and f(vec(u))=0 if vec(u)!inA?

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