Consier a set of simbols E= {a,b}, (1) Find all strings in E* shorter than 3. (2) Let L = {2 , a, bb}. Is L a language on E ? Why? (3) Write Lº and L².

Q: Let Cbe the language over {a, b,c, d, e, f} accepting all strings so that: 1.There are precisely…

A: Step 1 The answer for the above question is as follows   Step 2 1. S -> DbTbA 2. D -> dF 3. F…

Q: 4. Given a language L, the language LR is defined as the language consisting of the reverse of all…

A: PALINDROME: A palindrome is a word, number, or sequence of words. when we read that backward or…

Q: For each of the following languages LS {a,b}*, show that the elements of the infinite set {a"|n > 0}…

A: Shown that the given language pairwise distinguishable

Q: Consider the following Grammar |T → FT' T' → *T | /T | ɛ E' → +E | –E | ɛ |F → id |num S-E E – TE'…

A: Ambiguous Grammar : Grammar in which expression can be derived in different way using given Context…

Q: Compute FIRST & FOLLOW Sets for the following grammar;  F → for( D ; B ; E ) { S } D → T id | T id…

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Q: Compute FIRST & FOLLOW Sets for the following grammar;  F → for( D ; B ; E ) { S } D → T id | T id…

A: FIRST SET: First set for any given grammar symbol S is the complete set of the available terminals…

Q: Find context-free grammars for the following language: L = anbn, n is even.

A: Context-free grammar (CFG): This grammar containing predictable set of grammar rules which contains…

Q: Show that following grammars are ambiguous (or not ambiguous)  a.   S → aSS S → b

A: If for a given input string, more than one leftmost derivation or more than one rightmost derivation…

Q: Show that following grammars are ambiguous (or not ambiguous) a. S → aSS S → b

A: A grammar is said to be ambiguous if there exists more than one leftmost derivation or more than one…

Q: Let E be the alphabet {a,b}. E* – (E|E*b)aa(8|b£*), where the hyphen denotes set difference and ɛ…

A: We have to draw a FInite Automata that accept Language given in the question.

Q: Let E be the alphabet {a,b}. E* – (E|E*b)aa(8|b£*), where the hyphen denotes set difference and ɛ…

A: Given the language L we have to draw a FInite Automata that should be accepted be the language L.

Q: For each of the following languages Ls {a, b}*, show that the elements of the infinite set {a"|n >…

A: Shown that the given language is pairwise distinguishable

Q: Let E be the alphabet {a,b}. E* - (e|E*b)aa(e|b2*), where the hyphen denotes set difference and e…

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Q: 3. What is parsing? Consider the following grammar- S- TL T int float L+L, id id Parse the following…

A: Here is the answer:-

Q: Let E be the alphabet {a,b}. Let L be the language described by E* – (E|E*b)aa(e|bZ*), where the…

A:

Q: Find regular grammars for the following languages on {a, b}: L = {w : na (w) and nb (w) are both…

A: Regular grammar for the language L = {W: na (w) and nb (w) are both even} is as follows:

Q: Let E be the alphabet {a,b}. E* - (e|E*b)aa(e|bE*), where the hyphen denotes set difference and e…

A:

Q: For each of the following languages LS {a, b}*, show that the elements of the infinite set {a"|n 2…

A: Shown that the given language are pairwise distinguishable

Q: Let E be the alphabet {a,b}. E* – (e|E*b)aa(e|b£*), where the hyphen denotes set difference and e…

A:

Q: Find a grammar that generates language L = {a"bm,m > n,n 2 0 }

A: L= { a^n b^m, m>n,n>=0}m>n means number of 'b' should be greater than a number of 'a'.

Q: Let E be the alphabet {a,b}. Let L be the language described by E* – (e|E*b)aa(e|b£*), where the…

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Q: Let E be the alphabet {a,b}. E* – (ɛ|E*b)aa(E|b£*), where the hyphen denotes set difference and &…

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Q: Let E be the alphabet {a,b}. E* – (E|E*b)aa(ɛ|b£*), where the hyphen denotes set difference and &…

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Q: Let E be the alphabet {a,b}. E* – (e|E*b)aa(ɛ|b£*), where the hyphen denotes set difference and &…

A:

Q: Let E be the alphabet {a,b}. E* – (e|E*b)aa(E|b£*), where the hyphen denotes set difference and &…

A:

Q: Let E be the alphabet {a,b}. E* – (e|E*b)aa(e|b£*), where the hyphen denotes set difference and ɛ…

A:

Q: Let E be the alphabet {a,b}. E* – (e|E*b)aa(E|b£*), where the hyphen denotes set difference and &…

A:

Q: Let E be the alphabet {a,b}. E* – (e|E*b)aa(e|b£*), where the hyphen denotes set difference and &…

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Q: Let E be the alphabet {a,b}. E* – (E|E*b)aa(e|b£*), where the hyphen denotes set difference and &…

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Q: Let E be the alphabet {a,b}. E* – (e|E*b)aa(e\b£*), where the hyphen denotes set difference and ɛ…

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Q: Let E be the alphabet {a,b}. E* – (e|E*b)aa(e\b£*), where the hyphen denotes set difference and ɛ…

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Q: Let E be the alphabet {a,b}. Let L be the language described by E* - (e|E*b)aa(e\bE*), where the…

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Q: If L is built on E={0,1, 2}, then any string from {0,1}* either belongs to L a uestion 2 There is an…

A: Automata theory is the study of abstract machines and automata, as well as the computational…

Q: Give context-free grammars that generate the folowing languages for an alphabet, E ={0,1}: a) {w w…

A: S ->Q1Q1Q1 Q ->0Q|1Q|ε Here S,Q are nonterminal symbol and it contains at three 1's and in…

Q: 19. Give regular expression for the following languages over the alphabet £= {a, b}. a) L1 = Ail…

A: Given that, input alphabet= {a, b} L1= {All strings in which a is appears tripled} L2= {all strings…

Q: Question3a. Write a CFG for the language L over {a.b.c} where L= {a"b°c® | n=> 0 and b3 means that…

A: We need to draw CFG for the language L= {anb3cn | n>=0 } Language set will be ,L= {bbb, abbbc,…

Q: Let E be the alphabet {a,b}. E* - (e|E*b)aa(e|b£*), where the hyphen denotes set difference and ɛ…

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Q: Exercise 1 (Ex. 1, Chapter 2 of (Martin; 2011]). In each part below, draw an FA accepting the…

A: FA for language of all containing exactly two a's :

Q: Exercise 1 (Ex. 1, Chapter 2 of (Martin; 2011). In each part below, draw an FA accepting the…

A: The Answer is in step2

Q: Exercise 1 (Ex. 1, Chapter 2 of (Martin; 2011). In each part below, draw an FA accepting the…

A: Step by step explanation is in given below.

Q: If A is any language, let ?− 1 2 be the set of all first halves of strings in A so that ?− 1 2 = (x…

A: Any language that can be demonstrated in the form of regular expressions is said to be a language of…

Q: Prove that the following is context free by deriving the context free grammars generating t: {zcz* :…

A: A free language program is a formal language program that is used to make all possible strings in a…

Q: Recall this little grammar again: A→BX y|ɛ

A: I'm not making LL(1) parsing table rather I've used a short trick to find out whether the grammar is…

Q: Let the language over {a, b, c, d, e, f} accepting all strings so that: 1. There are precisely two…

A: The answer for the above question is as follows

Q: a. Describe the language over E= {a,b} generated by the following grammar %3D P = {S= aXb, X = aX|bX…

A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: Suppose L is a language over {a,b}, and there is a fixed integer k such that for every x ∈ Σ*, xz ∈…

A:

Q: Consider the grammar S→ PQI SQI PS, P→x, Q→y. To get string of n terminals, the number of…

A: Automata theory

Q: Given the following context-free grammar. → (S) | S+S | S-S | S*S | S\S | I → 0 | 1|... | 9 S…

A: Introduction to PDA: It is defined as Pushdown automata a way to implement a CFG in the same way we…

Q: Define a language L, in a recursive way where the strings should not contain ab at any place over…

A: L={abb,babb,aabb,aaabb.......}   It can easily be seen that  a, b, which are strings in the language…

Q: Define a language L, in a recursive way where the strings should not contain ab at any place over…

A: Recursive function (reverse) takes string pointer (str) as information and calls itself with next…