a) Draw NFAs for the following regular expressions [in all of the problems, = {a, b}:...

   

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a) Draw NFAs for the following regular expressions [in all of the problems, = {a, b}: (a U b*)a+b+ a* U (ab)* 1. il. 6) Why can't we prove "the class of regular languages is closed under the concatenation operation" using DFAs? How does non-determinism help us in proving this theorem? 2x9 a) Draw NFAs for the following regular expressions [in all of the problems, = {a, b}: (a U b*)a+b+ a* U (ab)* 1. il. 6) Why can't we prove "the class of regular languages is closed under the concatenation operation" using DFAs? How does non-determinism help us in proving this theorem? 2x9

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a Here are the NFAs for the given regular expressions a cup b a b NFA for a cup b a b a U ab NFA for ... View the full answer