Question

for an open interval (0,1) of a set a that is a subset of x belonging to real numbers, is a a closed subset?

Answer 1

Answer:

NO X belonging to real numbers is not a close subset

Step-by-step explanation:

The closed interval [a, b] contains all of its boundary points, while the open interval (a, b) contains none of them. We generalize these terms to sets in Rn: A set S is open if S = Sint . A set S is closed if S = ¯ S .

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