Question: Could someone please help me with this question Let S and T be subsers of R. Prove The following: inT (S) is an open ser.

Could someone please help me with this question

Let S and T be subsers of R. Prove The following: inT (S) is an open ser. Definition . Ler S be a subset of R. A paint x in IR is an interior point of S if There exists a neighborhood Nofx Such Ther NES. Use This definition To show That for all is XEint(S) there exists some epsilon so That N ( x; E ) E int ( s )
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