4. Construct a grammar over {a, b} whose language is {a"b"|0sn<m<3n}.
) Construct a context-free grammar for the language L={ ab”ab”a | n> > 1}.
Construct a context-free grammar for the language L={ ab”ab”a | n> 1}.
Construct a context-free grammar for the language L={ ab"ab'an> 1}.
With Proper explanation and example. Construct a context-free grammar for the language L={ ab”ab”a | n> 1}.
Write a grammar in Chomsky Normal Form whose language is {w € {a,b}* | w = a ba?bk, j, k >0}. Make sure your grammar is designed with roles for the variables to make the language derived clear.
Construct a context-free grammar for the language L={ab'ab'an> 1}.
Consider the following grammar <word>= empty string<word><dash> |<ch><word><ch> <ch> AB <dash> = - Provide a recursive recognition method isIn(strg) that return true if the string strg is in this language and returns false otherwise
4. Fill out the following blanks to make it a context-free grammar for the given language: { an+1 bn | n >= 0}{a2nbn2 | n >= 0 } (8 points) S + AB, A → B
Consider the language LOOPS = {<M,w> | M is a Turing machine and M loops forever on input w} Is LOOPS Turing decidable? Explain why or why not. Is LOOPS Turing recognizable? Explain why or why not.
QUESTION 22 Using the grammar, <S> <A> <S> + <A> + <A> | <id > <id > → abc which of the following is a word (or sentence) in the language: a + b + c a + b + c + a All of the other answers are words in the language. a + a + a