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6. Show that the following arguments are invalid, by drawing a counterexample world for each one. (i) (Large(a) |Large(a) A Large(b) Large(b)) (ii) Tet(a) v (Tet(b) A Tet(c)) (Tet(a) v Tet(b)) ^ Tet(c) Λ

6. Show that the following arguments are invalid, by drawing a counterexample world for each one. (i) (Large(a) |Large(a) A Large(b) Large(b)) (ii) Tet(a) v (Tet(b) A Tet(c)) (Tet(a) v Tet(b)) ^ Tet(c) Λ

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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6. Show that the following arguments are invalid, by drawing a counterexample world for each one. (i) (Large(a) |Large(a) A Large(b) Large(b)) (ii) Tet(a) v (Tet(b) A Tet(c)) (Tet(a) v Tet(b)) ^ Tet(c) Λ
Transcribed Image Text:6. Show that the following arguments are invalid, by drawing a counterexample world for each one. (i) (Large(a) |Large(a) A Large(b) Large(b)) (ii) Tet(a) v (Tet(b) A Tet(c)) (Tet(a) v Tet(b)) ^ Tet(c) Λ
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