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1. a. Let = {a,b}. Let A = {w | w is a string over that begins with an a}. Write the formal defintion for

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a. Let = {a,b}. Let A = {w | w is a string over that begins with an a}. Write the formal defintion for a DFA that recognizes A.

b. Let = {a,b}. Let B = {w | w is a string over that ends with 2 bs}. Write the formal definition for a DFA that recognizes B.

c. Write the formal definition for a DFA that recognizes A B.

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