Question: Automata and Complexity, Non Regular and Context Free Languages 4 . ( 8 points ) Give a CFG for the language { a i b

Automata and Complexity, Non Regular and Context Free Languages
4.(8 points) Give a CFG for the language {aibj|x,yinN,x+y=i and 4x+3y=j.
5.(8 points) Prove that the regular languages are closed under set difference. If A,B are regular, then so is w not in B}):}.
Automata and Complexity, Non Regular and Context Free Languages 4.(8 points)

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