Question: how that the class of recursive (or Turing-decidable) languages is closed under the operation of string reversal, i.e., show that if L is a recursive

how that the class of recursive (or Turing-decidable) languages is closed

how that the class of recursive (or Turing-decidable) languages is closed under the operation of string reversal, i.e., show that if L is a recursive language, then Rey(L) = {rev(z) | z L} is also a recursive language. Hint: Design a Turing machine which defines Rev(L) from a machine which defines L

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4. Explain the strengths and weaknesses of each approach.

d. Describe any challenges in trying to communicate. If there were no challenges, explain why you think it was so easy.

3. Identify the methods used within each of the three approaches.