Bobbi wanted to purchase a shirt that had an original price of $38.99 at the store where she works. she gets an employee discoun
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By definition, an isolated point x of a set S is a point of S.
Also, an interior point of a set S can be defined by the mean of the
existence of a positive number r>0 such that :
wherein D(x,r) is the disc of center x and radius r.
Example of a set whose boundary is not a subset of S:
Also, an interior point of a set S can be defined by the mean of the
existence of a positive number r>0 such that :
wherein D(x,r) is the disc of center x and radius r.
Example of a set whose boundary is not a subset of S: