Question: 2. (25 points) Laet a k- PDA be a pushdown automaton with k stacs. Thus, a o-PDA is an NFA and a 1-PDA is a

2. (25 points) Laet a k- PDA be a pushdown automaton

2. (25 points) Laet a k- PDA be a pushdown automaton with k stacs. Thus, a o-PDA is an NFA and a 1-PDA is a conventional PDA. Please show that the model of 2-PDAs has the same power as the model of standard Turing machines. That is, prove that for any 2-PDA we can construct an equivalent TM, and for any TM we can construct an equivalent 2-PDA

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