Question

3. (p —>q) 1^(
p—>r) is logically equivalent to
a) p = (q^r)
b) p → (q V r)
c) p 1 (qVr)
d) p V (q^r)

Answer 1

Answer:

A compound proposition that is always True is called a tautology. Two propositions p and q are logically equivalent if their truth tables are the same. Namely, p and q are logically equivalent if p ↔ q is a tautology. If p and q are logically equivalent, we write p ≡ q.

Answer 2

A compound proposition that is always True is called a tautology. Two propositions p and q are logically equivalent if their truth tables are the same. Namely, p and q are logically equivalent if p - q is a tautology. If p and q are logically equivalent, we write p = q.