Question: 20 points) a) Prove that the language L = {(D)|D is a DFA that accepts all odd length strings} is decidable. b) What is wrong

20 points) a) Prove that the language L = {(D)|D is

20 points) a) Prove that the language L = {(D)|D is a DFA that accepts all odd length strings} is decidable. b) What is wrong with the following proof? Why? T="On input string (D): 1. Check whether D represents a valid DFA. 2. Run D on the odd length strings one by one. If any one of those strings is not ac- cepted, reject. Otherwise, accept." T is a decider, therefore, L is decidable

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