Chapter 0: Q17E (page 1)
a. Give an NFA recognizing the language .
b. Convert this to an equivalent DFA. Give only the portion of thethat is reachable from the start state.
Short Answer
The equivalent DFA for NFA the Language is as follows:

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Chapter 0: Q17E (page 1)
a. Give an NFA recognizing the language .
b. Convert this to an equivalent DFA. Give only the portion of thethat is reachable from the start state.
The equivalent DFA for NFA the Language is as follows:

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a). Let C be a context-free language and R be a regular language. Prove that the languageis context free.
b). Let A= { contains equal numbers of }. Use part to show that A is not a CFL
Let
for any natural number x . If you start with an integer x and iterate f , you obtain a sequence, x,Stop if you ever hit 1. For example, if x=17 , you get the sequence 17,52,26,13,40,20,10,5,16,8,4,2,1 .Extensive computer tests have shown that every starting point between 1 and a large positive integer gives a sequence that ends in 1 . But the question of whether all positive starting points end up at 1 is unsolved; it is called the 3x+1 problem. Suppose that were decidable by a TM H. Use H to describe a TM that is guaranteed to state the answer to the 3x+1 problem.
Show that A is Turing-recognizable
Show how to compute the descriptive complexity of strings K(x) with an oracle for ATM.
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