Determine the boundary of the set and its closure

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Question: A set of points (complex numbers) is given. Determine whether the set is open, closed, open and closed, or neither open nor closed. Determine all limit points of the set, all boundary points, the boundary of the set, and its closure. Also determine whether the set is compact.

T is the set of all z with 4 ≤ |z + i| ≤ 8

Reference no: EM131595037

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