“For each of the following arguments, construct both a formal proof of validity and an indirect proof and compare their length”

1.

*Formal Proof*

- A ∨(B ∧ C) 152 more words

“For each of the following arguments, construct both a formal proof of validity and an indirect proof and compare their length”

1.

*Formal Proof*

- A ∨(B ∧ C) 152 more words

“Give conditional proofs of validity for Exercises 21*, 22, 23, 24, and 25 on pages 47-48.”

21. In back of book.

22.

- (T→E) ∧ (A→L) …Therefore, (T ∧ A)→(E ∧ L) 105 more words

“Prove the validity of each of the following arguments by the method of assigning truth values”

1. In back of book.

2. E=T ; F=T ; G=F ; H=F ; I=F… 78 more words

*Note: *I cheated and used conditional proof (CP) for problems 27-29. I don’t think this is such an egregious offense, as CP is introduced a mere four pages later. 567 more words

“Construct a formal proof of validity for each of the following arguments”

1. In back of book.

2.

- C …Therefore, D→C
- C ∨ ¬D (1,ADD) 298 more words

“Each of the following is a formal proof of validity for the indicated argument. State the ‘justification’ for each line that is not a premiss” 393 more words

“For each of the following arguments, state the Rule of Inference by which its conclusion follows from its premiss”

- Commutation.
- Material Implication.
- Transposition.
- De Morgan’s Theorem. 23 more words