Question: Exercise 5 (bonus 2 pts). Theorem 5.2 in the textbook says that the language ETM is undecidable. Use the undecidability of ErM to prove that

 Exercise 5 (bonus 2 pts). Theorem 5.2 in the textbook says

Exercise 5 (bonus 2 pts). Theorem 5.2 in the textbook says that the language ETM is undecidable. Use the undecidability of ErM to prove that the following language L is unde- cidable: = {(M, M2) I Mi and M2 are TMs such that L(M) L(M2))

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