Correct option - E
Set of context free languages is larger than set of regular language so it is evident that every regular language would be a context free language but not vice versa it can be inferred from the Chomsky hierarchy. Push down automata is used for recognizing context free languages.
1. (1 point) Which of the following is true? A. Every regular language is a context-free...
1. (1 point) Which of the following is true? A. Every regular language is a context-free language. B. Every context-free language is a regular language. C. If a language is context-free, then there exists a pushdown automata to recognize it. D. The set of context free languages is strictly larger than the set of regular languages. E. Each of A,C, and D is true. 2. (1 point) The following diagram shows a context free grammar with start variable S and...
determine if the language is regular, context-free, Turing-decidable, or undecidable. For languages that are regular, give a DFA that accepts the language, a regular expression that generates the language, and a maximal list of strings that are pairwise distinguishable with respect to the language. For languages that are context-free but not regular, prove that the language is not regular and either give a context- free grammar that generates the language or a pushdown automaton that accepts the language. You need...
determine if the language is regular, context-free, Turing-decidable, or undecidable. For languages that are regular, give a DFA that accepts the language, a regular expression that generates the language, and a maximal list of strings that arc pairwise distinguishable with respect to the language. For languages that are context-free but not regular, prove that the language is not regular and either give a context- free grammar that generates the language or a pushdown automaton that accepts the language. You need...
Say True/False 1. If A is a context-free language that is also non-regular, then A has a CFG in Chomsky normal form. 2. If A ⊆ B and A is a context-free language, then B is a context-free language.
Finite state machines & Regular Expressions Please select the best option 1. For the following questions Let r, s, t be regular expressions for the same alphabet "á" (left column). Get the property on the right side that produces equality for each regular expression. 2. From the diagram of the solution M = (Σ, Q, s,, F) is respectively: e would be NONE. 3. The following graph corresponds to a diagram of: A. Transition machine and states b. Transition...
1. Construct a DFSM to accept the language: L w E ab): w contains at least 3 as and no more than 3 bs) 2. Let E (acgt and let L be the language of strings consisting of repeated copies of the pairs at, ta, cg. ge. Construct both a DFSM to accept the language and a regular expression that represents the language. 3. Let ab. For a string w E , let w denote the string w with the...
Write a context-free grammar that generates the same language as regular expression which is ab*|c+ (Describe the four components of context-free grammar which are start symbol(S), non-terminals(NT), terminals(T), and set of production rules(P))
Determining whether languages are finite, regular, context free, or recursive 1. (Each part is worth 2 points) Fill in the blanks with one of the following (some choices might not be used): a) finite b) regular but not finite d) context-free but not deterministic context-free e) recursive (that is, decidable) but not context-free f) recursively enumerable (that is, partially decidable) but not recursive g) not recursively enumerable Recall that if M is a Turing machine then "M" (also written as...
3 points) Question Three Consider the context-free grammar S >SS+1 SS 1a and the string aa Give a leftmost derivation for the string. 3 points) (4 poiots) (5 points) (3 points) sECTION IWOLAttcmpt.any 3.(or 2) questions from this.scction Suppose we have two tokens: (1) the keyword if, and (2) id-entifiers, which are strings of letters other than if. Show the DFA for these tokens. Give a nightmost derivation for the string. Give a parse tree for the string i) Is...