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3. Show via BOTH context-free grammars and PDAs that the following languages are context free. (a) (4 points) (b) (4 points) L = {0n1n

3. Show via BOTH context-free grammars and PDAs that the following languages are context free. (a) (4 points) (b) (4 points) L = {0n1n | n 0}. L = {w = {0, 1}* | w = REVERSE (w)}.

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