Answered: 9. Find context-free grammars for the…

9. Find context-free grammars for the following languages (with n ≥ 0, m ≥ 0). (a) L = {a"b": n ≤m+3}. (b) L = {abm: n = m - 1}. (c) L = {a^f™ : n ‡ 2m}. (d) L = {a" bm: 2n ≤ m ≤ 3n}.

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

See similar textbooks

Related questions

Q: Question 14 papa .The best method of selecting a kth smallest element from a sequence of n integers…

A: The correct answer for the best method of selecting Kth smallest element is:

Q: CODİNG WİTH R PROGRAMİNG #Pleasae analyse dataset movies available after installing package…

A: R which offers a wide variety of the statistics-related libraries and provides a favorable…

Q: What feature of a gadget allows it to physically link up with a network?

A: Introduction Networking, usually commonly referred to as computer networking, is the process of…

Q: Let's pretend that a bank is using a method called snapshot isolation database to guar its data. Can…

A: Dear Student, The answer to your question is given below -

Q: he following twelve-bit numbers are in twos-complement form. Some are ositive and some are negative.…

A: Here in this question we have given incomplete table of binary decimal and hex .we have to complete…

Q: ase write this in Python: // Step 1: Create an empty array of size 26 to store the frequencies…

A: Dear Student, The complete code with implementation and expected output is given below -

Q: Create a BitArray with five Byte values (1, 2, 3, 4, 5), and then write a C# programme to show each…

A: C# program(Using BitArray you can't give 2, 3, 4, 5 values as it takes only true or false): using…

Q: 1. Find context-free grammars for the following languages: (a) L = a"b", n is even. (b) La"b", n is…

A: Introduction A formal grammar called context-free grammar is used to produce each potential string…

Q: You have 20 bottles of pills. 19 bottles have 1.0 gram pills, but one has pills of weight 1.1 grams.…

A: Introduction Given, You have 20 bottles of pills. 19 bottles have 1.0 gram pills, but one has pills…

Q: Why is data visualization important?

A: Analyzing data in a better way. Message analysis helps business partners focus on areas that need…

Q: Please comment all lines create a python script and run it to do the following: - Import os,…

A: Python script Import os Display current directory Create a new directory new Create two sub…

Q: part work u a and b Full explain this question and text typing work only We should

A: Dear Student, The answer to your question is given below -

Q: FIXED POINT & FLOATING POINT Convert f = 6.2637 to UQ3.12.

A: Floating point number: It is a positive or negative whole number with decimal point.

Q: Understanding the role of OLAP in descriptive analytics is crucial.

A: Online analytical processing (OLAP), often known as: The whole process of updating, querying, and…

Q: Consider the graph Gr shown below. Assume that the adjacency list of each node is sorted…

A: Depth-first search (DFS) is an algorithm for searching or traversing graph or tree data structures.…

Q: In Python, a class is a nuisance O a distraction O an instance O a blueprint for a concrete object.

A: Python is an object oriented programming language. Nearly everything in Python is an object, with…

Q: Question 7 Choose the correct answer to fill-in the blank in the sentence below: If a randomized…

A: Solution for the given question, Note: Since you have posted multiple questions, we will provide the…

Q: Suppose you have a RISC machine with a 2.7 GHz clock (i.e., the clock ticks 2.7 billion times per…

A: Given, Clock frequency = 2.7 GHz Time = 4.4 ms The instructions SET, LOAD, ADD, and LOOP have the…

Q: (1) A = {x|x € R+ :even numbers< 10}, B = {x € Zr² + 1 = 0}, C = {1,5}. Also assume the Universal…

Q: Could two NICs share a MAC address? Or not? Is it feasible to assign a single IP address to several…

A: Introduction The hardware element known as the Network Interface Cards (NIC) is a part of the…

Q: Give an outline of the many SCM concepts that may be used to software configuration.

A: Introduction: The process of tailoring a product to a customer's wants is known as product…

Q: If a dictionary x has no key "a" then what will the following do: x["a"] = 1 Give an error. O Add…

A: Dictionaries are optimized to retrieve values when the key is known, it is an ordered mutable…

Q: Encryption is the process of converting human readable data into encoded form to prevent…

A: Data Encryption: Data encryption is the process of converting data from plain text or readable form…

Q: The components of the operating system that are kept in the memory of the computer are referred to…

A: Dear Student, The answer to your question is given below -

Q: After executing DFS( G2, A), the parent of vertex G is vertex A. True False

A: vertex, v belongs to a cycle iff a DFS rooted at this vertex contains a back-edge adjacent to v

Q: write a merge method that can take any number of sorted arrays and merge them all into one sorted…

A: I give the code in Java along with the output and code screenshots

Q: Every student who takes Algorithms also takes Graphics.

Q: When it comes to computers, architecture and organization based on the computer are two separate but…

A: structural layoutArchitecture design describes the way a computer system's hardware is put together.…

Q: Suppose that someone has developed an algorithm to solve a certain problem, which runs in time T(n,…

A: solution given below

Q: C++ (C plusplus) Requirements: Use the given class “User” (below) All data members must be…

A: Define a new exception class named “BadValueException” class BadValueException : public…

Q: Both the activation functions and the loss function must be differentiable in order to use…

A: Neural network will almost always have the same activation function in all hidden layers. This…

Q: List a few methods that may be used to hijack a session. If you were under assault, what…

A: Depending on their location and vector, attackers have many ways for hijacking a user's session. How…

Q: What are the similarities between structured and unstructured data?

A: Dear Student, The answer to your question is given below -

Q: Java , Write a method named normalize() that accepts an argument which is reference to a…

A: Dear Student, The source code, implementation and expected output of your program is given below -

Q: algorithm PrimMST (G) pre-cond: G is an undirected graph. post-cond: The output consists of a…

A: Because which edges are evaluated changes as the algorithm progresses, this is an adaptive greedy…

Q: Create the data structures for a standard deck of cards. Describe how you would To implement…

A: I give the code in Java along with the output and code screenshots

Q: Question 10 sum Which is more likely: 5 heads in 10 coin flips, 50 heads in 100 coin flips, or 500…

A: Dear Student, The source code, implementation and expected output of your program is given below -

Q: public class Bo

A: Dear Student, The answer to your question is given below -

Q: Making sure that encapsulation is not violated (i.e., instance variables must be private); design an…

A: class Vehicle{ private int year; priavte String make; Vehicle(){} Vehicle(int y,…

Q: How does data visualization tools work?

A: Data visualization enables business users to gain insight into their vast amounts of data.Data…

Q: p1 = Person("John", 36) p1.age = 40 p1.myfunc() O 40 O Hello my age is 40 36

A: The question creates a class named Person with two instance variables, namely name and age. It also…

Q: An airline database that takes advantage of "snapshot isolation" might serve as a good starting…

A: Data read inside a transaction will never reflect changes made by other concurrent transactions,…

Q: Exactly how are ElGamal Digital Signatures generated and validated?

A: ElGamal is a digital signature creation system based on modular exponentiation.This method uses a…

Q: What is the return data type of the following function header (also called prototype)? bool…

A: Return data type of a function represents the type of result which the function returns back when…

Q: (1) Write the pseudo-code or draw a flowchart and (2) Write a C++ program, that prompts the user to…

A: the solution is an given below :

Q: Given a loss function, any loss function, what is a concern when using any optimization algorithm…

A: A method of evaluating how well a particular algorithm models given data.

Q: Describe the steps used by a system analyst to evaluate software.

A: The solution is given in the next step

Q: What is the output of the below Python program? 1s = list("Abba Pink Floyd") print (1s[5] + 1s[-9])…

A: ls = list("Abba Pink Floyd") print(ls[5] + ls[-9]) Find the correct output of then given python code

Q: Which of the following code snippets correctly traverses the contents of a linked list, from…

A: Answer the above question are as follows

Q: What is (1.0111 * 2 ^ 5)(1.101 * 2 ^ 3)

A: Note that there were no extra information provided hence assuming this number belongs to IEEE 754…

Concept explainers

Intelligent Machines

Machines that use artificial intelligence to learn from the environment and past experiences to perform better in the presence of variability and uncertainty are called intelligent machines. Intelligence develops according to environment and experience. It is human-like behavior. When the computer system or any programmed machine learns from the inputs and corresponding outputs, it can be called an intelligent machine.

Question

please explain step by step

9. Find context-free grammars for the following languages (with n ≥ 0,
m > 0).
(a) L =
{a" bm: n ≤ m +3}.
(b) L =
(c) L = {a"b": n‡2m}.
(d) L = {a" bm: 2n <m <3n}.
{a" bm: n = m - 1}.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Trending now

This is a popular solution!

Step by step

Solved in 5 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Find context-free grammars for the following languages (with n ≥ 0, m ≥ 0).(a) L = {anbm : n ≤ m + 3}. (b) L = {anbm : n = m − 1}. (c) L = {anbm : n != 2m}.
L = {(a^n)(b^m)(c^k) ; n = m or m ≠ k } Find context free grammars (with n, m, k greater than or equal to 0)
Find context-free grammars for the following languages (with n ≥ 0, m ≥ 0, k ≥ 0): L = {anbmck, k = n + m}.
Find context-free grammars for the following languages (with n ≥ 0, m ≥ 0) L = {anbm : n = m − 1}.
6. Give a context-free grammar generating the following language (Σ = {a, b, #}): {w#x | the reverse of x is a substring of w for w, x ∈ {a, b}∗}
for the grammars below, determine if they're ambiguous; and if a grammar is ambiguous, find a string that demonstrates the ambiguity and also draw two different parse trees for the string: a) S → aSa | bSb | cSc | a | b | c | ε b) S → ε | ab | ba | aSb | bSa c) S → aSb | C C → ε | c | Cc
answer the following and explain Establish that L is context-free by building a CF grammar for L = {0n1m: n does not equal 6m and n,m ≥0}
Given Σ={a,b}, Create a Context-Free Grammar for each of the following language a. Language with a string such that number of a is twice the number of b. b. {a^n b^n c^m d^m,n,m≥0} c. {a^n b^m where n>m}
Provide the rules for context-free grammars that generate the following languages. L3 = {w ∈ {0, 1} | n0(w) ≥ 2, and n1(w) is odd}
Find context-free grammars for the following languages: L = { anwwRbn: w ∈ {a, b}∗, n ≥ 1 } L = {anbmck: k = n + m}
Determine the type of the following grammars into the Chomsky Hierarchy(e.g. Type-0, Type-1, Type-2 and Type-3). 4.)G=({x,y}, {C,A,B,S}, S, P),P={S::=Cx, S::=Cy, S::=By, S::=Ax, S::=x, S::=y, A::=Ax, A::=Cx,A::=x,B::=By, B::=yA, C::=xA} 5.)G=({a,b,c}, {S,B}, S, P),P={S::=abc, S::=aBSc, Ba::=aB, Bb::=bb}
Let Σ = {a, b}. For each of the following languages, ﬁnd a grammar that generates it. (a) L1= {anbm: n ≥ 0,m>n} (b) L4={ an bn-3: n ≥ 3}