Question: 4. Let L be a language accepted by a PDA M. Define Prefix(L)-fr there exists y such that xy L). Describe a construction of a

4. Let L be a language accepted by a PDA M.

4. Let L be a language accepted by a PDA M. Define Prefix(L)-fr there exists y such that xy L). Describe a construction of a PDA M, accepting Prefix(L). (You only need to describe in English how M works.)

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