- #1
MarcL
- 170
- 2
Homework Statement
For each of the premise-conclusion pairs below, give a valid step-by-step argument ( proof ) along with the name of the inference rule used in each step
premise { ¬ p → r ∧ ¬ s , t → s , u → ¬p , ¬w , u ∨ w } conclusion : ¬t ∨ w
Homework Equations
All the inference rules, Modus ponens, Modus tollens, etc...
The Attempt at a Solution
[/B]I tried by using the w term but it didn't work so I did this:
1) u → ¬ p Prmise
2) ¬p → r ∧ ¬s ass
3) u → r ∧ ¬ s
However I seem stuck