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2.5.9. For each statement, decide whether it is true or false. Justify your answer briefly. (a) {(x, y): x, y ER and a-1 = 0} C {(x,y): x, y E R and æ²–x = 0} (b) {x ER: r – 2x = 0} CQ (c) NER (d) Z x RCR x Z (e) N x ZCQ × R

2.5.9. For each statement, decide whether it is true or false. Justify your answer briefly. (a) {(x, y): x, y ER and a-1 = 0} C {(x,y): x, y E R and æ²–x = 0} (b) {x ER: r – 2x = 0} CQ (c) NER (d) Z x RCR x Z (e) N x ZCQ × R

Algebra for College Students
Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter13: Conic Sections
Section13.1: Circles
Problem 48PS
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2.5.9. For each statement, decide whether it is true or false. Justify your answer briefly. (a) {(x,y): x,y ER and a–1 = 0} C {(x,y): r, y € R and a2-x 0} (b) {r ER: r3– 2r = 0} CQ (c) NER (d) Z x RCR × Z (e) N x ZCQ × IR
Transcribed Image Text:2.5.9. For each statement, decide whether it is true or false. Justify your answer briefly. (a) {(x,y): x,y ER and a–1 = 0} C {(x,y): r, y € R and a2-x 0} (b) {r ER: r3– 2r = 0} CQ (c) NER (d) Z x RCR × Z (e) N x ZCQ × IR
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