lustify why the following argument is invalid. All letters represent generic statement variables. p V q → r ^s p^q→r V s p V s ... q V r

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Justify why the following argument is invalid. All letters represent generic statement variables.
p V q →r ^ s
p^q→r V s
p V s
.. q V r
Transcribed Image Text:Justify why the following argument is invalid. All letters represent generic statement variables. p V q →r ^ s p^q→r V s p V s .. q V r
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