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These are three questions I have for my Introduction to Logic that I am stuck on.These are the instructions:

Construct a formal proof for each of the following valid arguments using the rules of implication/inference and the first 5 rules of replacement.

The two problems are below.


  1. R>~X
  2. DvR
  3. X /D



  1. ~(~E v ~N) > T
  2. G> (N & E) /G>T



The third problem is a little different.

The instructions are:

Construct a proof for the following valid argument using all 18 rules.


  1. (A & B) > C
  2. (B > C) > (Q v X)
  3. ~(Q v ~A) /X

Step-by-step answer

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  8. acinia pulvinar tortor nec facilisis. P
  9. gue vel laoreet ac, dictum vitae odio.
  10. s a molestie consequat, ultrices ac magna. Fusce
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Subject: Logic, Math

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