(P →Q) = (¬ Q →→P) (P^Q) = (Q^P) ((P ✓ Q) ✓ R) = (P ✓ (Q ✓ R)) V V Pv (QAR) = (PvQ) ^ (PVR)

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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Proof by table

(P→Q) = (-Q→→P)
(PAQ) = (QAP)
((P✓ Q) ✓ R) = (P ✓ (Q ✓ R))
Pv (QAR) = (P✓ Q) ^ (PVR)
Transcribed Image Text:(P→Q) = (-Q→→P) (PAQ) = (QAP) ((P✓ Q) ✓ R) = (P ✓ (Q ✓ R)) Pv (QAR) = (P✓ Q) ^ (PVR)
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