Intro to philosophy question proofs instructions: for each formal argument given, write out a correct formal proof. be sure to justify each step in your proof correctly.
instructions: for each formal argument given, write out a correct formal proof. be sure to justify each step in your proof correctly.
#1 (p ? q) & (r ? s)
p & ~s
r ? (q ? t)
–––
t
#2 p ? (q ? ~r)
(~r ? t) & p
–––
q ? t
#3 (p ? q) & (s ? r)
(q ? s) & (p ? t)
t ? r
–––
r