Question: Could someone please check my work Let S = SZ. W FinEINS Is S open, closed, or neither? bd S = S U Eos. Since

Could someone please check my work Let S = SZ. W

Could someone please check my work

Let S = SZ. W FinEINS Is S open, closed, or neither? bd S = S U Eos. Since S contains some of its boundary but not all of its boundary, S is neither open nor closed

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