Exercise 15. Use the method of conditional proof to explain in words why the sentence{(Pv Q) A [(P= R) A (Q = S)]} = (RV S)is a tautology.2 Be explicit about discharging assumptions.

Given: P∨Q∧P⇒R∧Q⇒S⇒R∨S To find: Tautology

Answered: Exercise 15. Use the method of…

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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Exercise 15. Use the method of conditional proof to explain in words why the sentence {(Pv Q)A [(P= R)A (Q= S)]}= (R V S) is a tautology.12 Be explicit about discharging assumptions.