Task 4- Giving explanations, use De Morgan's Law to simplify the following: "(AvB ) v (~A^~B) Task 5- Use a truth table to show that the original statement and your simplif version are equivalent.
Task 4- Giving explanations, use De Morgan's Law to simplify the following: "(AvB ) v (~A^~B) Task 5- Use a truth table to show that the original statement and your simplif version are equivalent.
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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please answer the marked places
TASK 4 AND TASK 5

Transcribed Image Text:The tasks below will involve you considering the following sentences:
A- All valid usernames contain seven letters and a number
B - All valid passwords must contain at least one non-alphanumeric character
C- All valid combinations contain a valid username and a valid password
Task 1 - Choose one of the sentences above. Using that sentence explain the
meaning of the terms "statement" and "predicate".
Task 2- Construct a truth table based on the statements above. It should include
|columns for A, B, A,^B, AvB, A^B, C, *C
Task 3– Give the English equivalents for each of your column headings
Task 4- Giving explanations, use De Morgan's Law to simplify the following:
"(AvB ) v (~A^~B)
Task 5- Use a truth table to show that the original statement and your simplified
version are equivalent.
2.6
2.7
2.9
2.10
2.8
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