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1) Let A = {x EN: x²-9=0}. Rewrite A in roster notation.

1) Let A = {x EN: x²-9=0}. Rewrite A in roster notation.

Database System Concepts
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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1) Let A = {x EN: x²-9=0}. Rewrite A in roster notation. |A| = 2) Let B = {x EZ: x² -9 = 0}. Rewrite B in roster notation. |B| = 3) Let C = {x EZ: x² - 8 = 0}. Rewrite C in roster notation. |C| =
Transcribed Image Text:1) Let A = {x EN: x²-9=0}. Rewrite A in roster notation. |A| = 2) Let B = {x EZ: x² -9 = 0}. Rewrite B in roster notation. |B| = 3) Let C = {x EZ: x² - 8 = 0}. Rewrite C in roster notation. |C| =
For each of the following sets, tell if it an infinite set, finite set or an empty set. Finite and nonempty 1. {x EZ: 0<x< −5} Empty 2. (x ER:x>0} 3. (x ER: 0<x< −5} Infinite Empty 4. (x EN:x>0} Finite and nonempty 5. {x EN: 0<x<-5} 6. (x EZ :x>0} Empty Hint:
Transcribed Image Text:For each of the following sets, tell if it an infinite set, finite set or an empty set. Finite and nonempty 1. {x EZ: 0<x< −5} Empty 2. (x ER:x>0} 3. (x ER: 0<x< −5} Infinite Empty 4. (x EN:x>0} Finite and nonempty 5. {x EN: 0<x<-5} 6. (x EZ :x>0} Empty Hint:
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