Question: Let w be a string o f letters and let the language T be defined as adding w to the language S. Suppose further that

Let w be a string o f letters and let the language T be defined as adding w to the language S. Suppose further that T* = S*.
(i) Is it necessarily true that w ∈ S?
(ii) Is it necessarily true that w ∈ S*?

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Answer and Explanation i It is not necessarily true that w S because w might not be a valid ... View full answer

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