Analyzing the Setup
We are tasked with simplifying the logical expression:
∼(p∧(p⇒∼q))
This expression may appear complex, but by applying fundamental logical laws systematically, we can dismantle it layer by layer.
Applying De Morgan's Law
We begin by addressing the outermost negation acting upon a conjunction. According to De Morgan's Law, the negation of a conjunction is the disjunction of the negations.
Applying this law, we obtain:
∼p∨∼(p⇒∼q)
Resolving the Implication
Next, we focus on the inner term ∼(p⇒∼q). We utilize the logical identity for implication, which states that A⇒B≡∼A∨B.
Applying this to the term
p⇒∼q, we get:
∼p∨∼q
Substituting this back into our main expression, we have:
∼p∨∼(∼p∨∼q)
Final Simplification
We apply De Morgan's Law once more to the second part of the expression. The negation of ∼p becomes p, the disjunction ∨ flips to a conjunction ∧, and the negation of ∼q becomes q.
The expression now reads:
∼p∨(p∧q)
To simplify further, we apply the
Distributive Law, treating the logical operators similarly to algebraic expansion:
(∼p∨p)∧(∼p∨q)
The term
(∼p∨p) represents the
Law of Excluded Middle, which is a tautology (
T). Our expression simplifies to:
T∧(∼p∨q)
By the
Identity Law,
T∧X≡X. Therefore, the final simplified result is:
∼p∨q