Question: 13. (8%)(a) Give a regular expression defining the same language as the following context-free grammar: S Sa, K aa, S KbK Ka. (b) What is

13. (8%)(a) Give a regular expression defining the same language as the following context-free grammar: S Sa, K aa, S KbK Ka. (b) What is the language over the alphabet {a,b} defined by the following context-free gram- mar with start variable S: Sasa, S T , T UT Tb Is this language regular? Give an informal explanation of your

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