Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Give a direct proof (a direct proof by cases is also allowed) Prove: If x is even and y is any integer, then their product xy is even. (Use the definitions of even and odd. Do NOT use any facts like "even times even is even" or "even times odd is even".) 3.
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Transcribed Image Text:Give a direct proof (a direct proof by cases is also allowed) Prove: If x is even and y is any integer, then their product xy is even. (Use the definitions of even and odd. Do NOT use any facts like "even times even is even" or "even times odd is even".) 3.
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