a. If x ER and x-2 ≤ 3, then x < 2 or x ≥ 3. b. For every non-zero real number x, there exists a real number y such that xy = -2. c. 3¹+2 is prime for all positive integers n.
a. If x ER and x-2 ≤ 3, then x < 2 or x ≥ 3. b. For every non-zero real number x, there exists a real number y such that xy = -2. c. 3¹+2 is prime for all positive integers n.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question #1. Prove or disprove.

Transcribed Image Text:a. If x ER and
x
x-2
C.
≤ 3, then x < 2 or x ≥ 3.
b. For every non-zero real number x, there exists a real number y such that xy = -2.
3¹ + 2 is prime for all positive integers n.
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