Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Discrete Math 

I was confused about how to answer these questions ( I attached them). If you could help me with them,  I really appreciated it. Thank you.

This is the one I answered and not sure if it correct

1. p → q              4. r→p  2,3 D.S Disjunctive syllogism

2. (r V s) → p 

3. ¬s                  

 .·. r → q 1,4 H.S Hypothetical Syllogism  

C.
1. p» (g v r)
2. 7
3. Therefore, p-g
d.
1. -(OA (g v r))
2. Therefore, (-p v-(g v r))
(2)3. Apply a series of logical equivalences and/or rules of inference to show that 7 -»g
follows from the following premises. Be sure to indicate the line mumber(s) and logical
equivalence or rule of inference used in each step.
1. p-+4
2. v)p
3. -3
(2) 4. Use logical equivalences and rules of inference to show that -5 A (I-a)
follows from the following premises:
1. (tV t)p
2. 5t
3. p-4
4. -t
(3) 5. Write a direct proof to show that if m is an even integer then Sm+ 3 is an odd
integer.
(3)6. Write an indirect proof to show if 3m +1 is an odd integer then m is an even
integer.
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Transcribed Image Text:C. 1. p» (g v r) 2. 7 3. Therefore, p-g d. 1. -(OA (g v r)) 2. Therefore, (-p v-(g v r)) (2)3. Apply a series of logical equivalences and/or rules of inference to show that 7 -»g follows from the following premises. Be sure to indicate the line mumber(s) and logical equivalence or rule of inference used in each step. 1. p-+4 2. v)p 3. -3 (2) 4. Use logical equivalences and rules of inference to show that -5 A (I-a) follows from the following premises: 1. (tV t)p 2. 5t 3. p-4 4. -t (3) 5. Write a direct proof to show that if m is an even integer then Sm+ 3 is an odd integer. (3)6. Write an indirect proof to show if 3m +1 is an odd integer then m is an even integer.
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