Ashleeagundiz5801 Ashleeagundiz5801
  • 25-05-2023
  • Mathematics
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2. Prove that each of the following sets is open in the appropriate vector space with usual norm. (a) {(x, y) = R²: (x − 1)² + (y + 2)² < 1}. (b) {r ER: - 3| < 1}. (c) (0, [infinity]) in R. (d) R\{0}.

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