1.
a. Use the full truth table method to determine the validity of the following argument
((A v B) & C) -> D
(~A & C) -> B
B -> D
- - - - - - - - -
B
b. Use the short truth table method to determine the validity of the following argument. A step-by-step description as to how the value in each cell was arrived at should be given.
~P v (Q & R)
R -> ~Q
~R & ~P
- - - - - - - - -
~Q