8. Consider the set S = {(x,y) E R²: a >0 and y 2 0}. (a) Explain your answers. Find dS, S° and Ext(S), and determine whether the given subset S is open or closed.

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8.
Consider the set S = and y > 0}.
{(x, y) E R² : x > 0
Find ƏS, Sº and Ext(S), and determine whether the given subset S is open or closed.
(a)
Explain your answers.
Transcribed Image Text:8. Consider the set S = and y > 0}. {(x, y) E R² : x > 0 Find ƏS, Sº and Ext(S), and determine whether the given subset S is open or closed. (a) Explain your answers.
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