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Prove this statement by contraposition: For all real numbers ?, if 2?3 − 5?2 + 11? + 7 is irrational then r is irrational.

Prove this statement by contraposition: For all real numbers ?, if 2?3 − 5?2 + 11? + 7 is irrational then r is irrational.

Advanced Engineering Mathematics
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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Prove this statement by contraposition:

For all real numbers ?, if 2?3 − 5?2 + 11? + 7 is irrational then r is irrational.

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