Show that the following argument with hypotheses on lines 1-3 and conclusion on line c is valid by supplementing steps using the rules of inference and logical equivalences. Clearly label each step. 1 . (p → q) ∨ (s → q)      Premise 2 . ¬q ∨ r                         Premise 3 . ¬r                                Premise . . . c.  p → ¬s                       Conclusion

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter2: Parallel Lines
Section2.CT: Test
Problem 3CT: To prove a theorem of the form "If P, then Q" by the indirect method, the first line of the proof...
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24. Show that the following argument with hypotheses on lines 1-3 and conclusion on line c
is valid by supplementing steps using the rules of inference and logical
equivalences. Clearly label each step.
1 . (p → q) ∨ (s → q)      Premise
2 . ¬q ∨ r                         Premise
3 . ¬r                                Premise
. . .
c.  p → ¬s                       Conclusion

 

Can you please help me with this discrete maths question? I found it in the Textbook, but there no solution.

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