2. Draw the DFA for the following languages a. L = {w\w contains substring "aba" and has b in the second last position} b. L = {w[ every 3rd symbol in w is 0} e.g. 110100, 000110001. But 101 won't be accepted since the 3rd symbol is 1. c. Set of all strings that are at least of length 4 and contain an even number of 1's d. L = {w| The 3rd last symbol in w is 0} %3D

Q: 2. Draw the DFA for the following languages a. L = {w]w contains substring "aba" and has b in the…

A: Deterministic finite automata (DFA). The finite automata is called deterministic finite…

Q: 2. Draw the DFA for the following languages a. L = {w\w contains substring "aba" and has b in the…

A: One assumption has made that language contains only {a,b} or {0,1}.

Q: Write regular expression for the following languages, alphabet {0,1} a. The set of strings that do…

A: Regular Expression :- a. The set of strings that do not end with 11. Here A is initial state and C…

Q: Show that the following languages are regular languages: (a) L5 = {w E {a,b}* | w contains the…

A: Here, we have to show that given language is regular language or not. As we know that, if we can…

Q: ) Give regular expressions for the following languages, where the alphabet is S= {a, b, c}. --all…

A: Actually, given information regular expressions for the following languages, where the alphabet is…

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: Q2) Give regular expressions for the following languages, where the alphabet is S = {a, b, c}. --…

A: Given: Q2) Write regular expressions for the following languages, with S = a, b, and c as the…

Q: 7. For each RE, give two strings that are in the corresponding language and two strings that are…

A: We are given 3 regular expression and we will give two example string which correspond to given…

Q: Build a DFA for the following language: L = { w | w is a string over a , and b starts ( aa or bb )…

A:

Q: Build a DFA for the following language: L = { w | w is a string over a , and b starts ( aa or bb )…

A: Since you are asking multiple questions, we are answering first question for you. If you want…

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: b) Write the CFG for the following language over alphabet Σ= {p,q ,r} L={ pqr, ppqrr, pppqrrr,…

A: Given language L = pn q rn where n>=1 L= {pqr, ppqrr, pppqrrr, ppppqrrrr, pppppqrrrrr, ……………..}

Q: 1. Write regular expression for the following languages, alphabet {0,1} a. The set of strings that…

A: A regular expression for the language {0,1}, a). For the set of strings that do no end with 11…

Q: 1. Write regular expression for the following languages, alphabet {0,1} a. The set of strings that…

A: As per our guidelines we are supposed to answer only one question. Kindly repost the remaining…

Q: Write regular expression for the following languages, alphabet {0,1} a. The set of strings that do…

A: A. The set of strings that do not end with 11 B. The set of strings that do not contain substring 01…

Q: Consider the following languages. Which of them is/are irregular? I) L = {a"b" | m= n} II) L = {All…

A: Regular language : A regular language is a language which is expressed using regular expression or…

Q: Q No. 1: Write regular expressions and construct NFA for the following languages over the alphabet I…

A: Given: ∑={a,b} a)Write a regular expression that contains at least two a's. b)Write a regular…

Q: Obtain CFG for the following languages.  L= {WW R |W is in (a, b)*, W R is the reversal of W}

A: The Answer is

Q: 1. Write regular expression for the following languages, alphabet {0,1} a. The set of strings that…

A: The following are the regular expressions:- a. The set of strings that do not end with 11.  Answer:…

Q: Consider the following languages. Which of them is/are irregular? I) L = {a"b" | m = n} II) L = {All…

A: Language :- Collection of string is called language. Irregular language:- A language that can not be…

Q: Find the regular expressions describing the following languages defined over the alphabet E = {0,1}:…

A: Given: We are given three languages which contain alphabets and some conditions on them.  Goal: We…

Q: Q1) Find NFA's for the following languages: Li={ 2"1™3k : n, m, k > 0 } on E={1,2,3 }. with A…

A:

Q: Note that in questions below na(w) and n,(w) indicate the number of a's and the number of b's in…

A: NOTE: As per rules we are allowed to solve the first 3 subquestion. a. {w: w does not contain…

Q: For each of the following languages, give two strings that are members and two strings that are not…

A:

Q: 2. For each of the following languages, draw an FA accepting it. a (a, b)*{a) b. (bb, ba)* c. (a,…

A: As per the answering guidelines, solving the first 3 sub question.

Q: a. Draw a DFA for the language accepting strings ending with ‘bbabb’ over input alphabets ∑ = {a,…

A: DFA It refers to deterministic finite automata. Deterministic refers to the distinctiveness of the…

Q: Q3) Give regular expressions for the following languages, where the alphabet is S = {0, 1}.…

A: A sequence of symbols and characters expressing a string or pattern to be searched for within a…

Q: : Create R.E for a language defined over Σ={a, b} having even number of a’s and even number of b’s.

A: List of strings accepted by a language is given below: aabb bbaa abab baba aa bb abaaab abbbab

Q: Provide R.E of a language where every string starts and ends with dissimilar letters over {8 , 9}

A: Regular expression for language: In case regular expression are equal if and only if than correspond…

Q: Write regular expressions for the following languages, then construct DFAS for each of the…

A: DFA is also known as deterministic finite automata.

Q: Give DFA’s accepting the following languages over the alphabet {0, 1} Language : The set of strings…

A: A first path starting with 01 and then ending in sigma*(covers the case which both being and end),…

Q: Write regular expressions for the following languages on {0, 1}. A. all strings ending in 10, B. all…

A: Input values {0,1}  A. all strings ending in 10  B. all strings not ending in 10,

Q: 1- Draw an NPDA for the following languages c) L= {ww*}, w={a,b}* d) L= {a^b2n, n20} U {ww*},…

A: Given Languages: (d)L={anbn,n>=0}U{WWR},w={a,b}*

Q: Find dfa's for the following languages on E = {a,b}. (a) L= {w: \w| mod 3 = 0}. (b) L= {w: ]w| mod 5…

A: DFA is referred to as Deterministic Finite Automata. Finite automata are called DFA if the machine…

Q: Construct RE's for following languages over E= {a, b} a) All words which contain substring “abab".…

A: R.E. = (a+b)*abab(a+b)*

Q: Consider the following languages. Which of them is/are irregular? I) L = {a"b" | m= n} II) L = {All…

A: Consider the following languages. Which of them is/are irregular? Ans.- (b) I and III

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: Show that L = {ww*w:w E {a, b}*} is not a context-free language.

A: proof by pumping lemma: 1)assume given language is context-free and there exists a PDA for this.…

Q: Provide a DFA or NFA (whichever is easier) for the following languages  {w|w does not contain the…

A: Deterministic finite automata for the given language

Q: Write regular expressions of the following languages-  The set of strings that start and end with…

A: Given: Write regular expressions of the following languages-  The set of strings that start and…

Q: 7. Find dfa's for the following languages on E = {a,b}. (a) L = {w: |w| mod 3 = 0}. (b) L = {w: |w|…

A:

Q: Build a DFA for following languages: (Σ = {0, 1}) L = { w | w is a binary string such that in every…

A: Designed DFA for the given languages

Q: Language of all those words which has two a’s and two b’s.

A: The regular expression is the simple expressions that the language that accepts by finite automata…

Q: Grammar is as follows: P → H| PbdH H → a|(P)

A: SLR closure table Goto Kernel State Closure   {P -> .H} 0 {P -> .H; H -> .a; H ->…

Q: b) What language is generated by the following grammars? In each case justify your answer. i. S -> 0…

A: Actually, given information is: i . S -> 0 S 1 | 0 1ii. S ->+ S S | - S S | aiii. S ->S ( S…

Q: Construct a regular expression defining each of the following languages over the alphabet I = {a, b}…

A: I have provided regular expressions for both the languages given in the question in step 2.

Q: For each statement below, decide whether it is true or false. If it is true, prove it. If it is not…

A: d) let's assume a FA which accept all the string which starts from a  L1 is bbabaaba so it's is not…

Q: 5. Find a grammar for each language. a. The even palindromes over {a, b, c}. b. The odd palindromes…

A: Given : d.{anbcn | n belongs to N} Union {ambn | n,m belongs to N} e.{ambn |  n,m belongs to…

Q: Fix the alphabet to be E = {a}. For each of the conditions below, give an example of a language L on…

A: Defined the given language for the given conditions

Q: Give DFA’s accepting the following languages over the alphabet {0, 1} Language : The set of all…

A: DFA:DFA stands for Deterministic Finite Automaton. In this, for each and every input symbol, we can…