QUESTION 14 What is not true about context free languages? O A. Deterministic context free language is a sub-set of non-deterministic context free language O B. A regular language is a context free language OC.ALL(k) language is a context free language O D.Non-deterministic context free language is a sub-set of deterministic context free language

QUESTION 14 What is not true about context free languages? O A. Deterministic context free language is a sub-set of non-deterministic context free language O B. A regular language is a context free language OC.ALL(k) language is a context free language O D.Non-deterministic context free language is a sub-set of deterministic context free language

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question 4 Consider the following language: L = {anbm | 0 <=n <= 2m} The alphabet is {a,b}. A) Exhibit a context-free grammar. B) Exhibit two strings over a+b+ that belongs to this language. C) Exhibit two strings over a+b+ that does not belong to this language. .........
Question 3 Full explainthe this question very fast solution sent me step by step Don't ignore any part all part work u Not:- Text typing work only not allow paper work
Prove or disprove that the language is context-free.
Part I. Convert the following NFA with-epsilen-meves to an equivalent DFA. What language is accepted? 92 23 Part II. Find a regular expression for the following language in alphabet {a,b}: L={w/ w contains three b's and at most 2 a's}
Question 1) Design PDAs to recognize the following languages. (Note: The question asks for PDAs not grammars) 1. Let Σ={0, 1, 2}. L={0¹1¹2k| i=j+k} 2. Let = {0, 1, 2}. L={0¹1¹2k| i
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1. Suppose the languages recognized by DFAS M and N are L1 and L2 respectively. How can we use DFAS M and N to construct a DFA that recognizes the language L1nL2? [Can you use De Morgan's Law?]
Which of the above is unsolvable? Determining ambiguity in a context-free language.B Identifying a context-free language that generates a string.C Decide whether a context-free grammar's resulting language is empty.DIdentifying a context-free grammar's finite language.
Question 16 Choose the most specific language type for the given languages. -The languages accepted by pushdown automata ✓ {ww we {0,1}* } {we {a,b}* | w=w =WR} ✓ {we {0,1}* w has an odd number of 0's and ends with 1} A. Regular B. Context-free (regular or not) C. Context-Free but not regular D. Decidable (context-free or not) E. Decidable but not context-free F. Recognizable (decidable or not) G. Recognizable but not decidable H. Unrecognizable
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2. Give a context-free grammar that generates the following language: {x1#*#. |k≥ 2, each xi € {a, b}*, and for` some i and j #i, x₁ = x² #22#...#k