Analyzing the Setup
The expression (p∧q)⇒((r∧q)∧p) may appear as a chaotic jumble of symbols, but it is a puzzle waiting to be decoded. By stripping away the complexity, we can reveal the hidden simplicity beneath.
Phase 1
The Implication Trap
The first hurdle is the implication operator,
⇒. We must transform it using the fundamental identity:
A⇒B≡∼A∨B
Applying this to our expression, where
A=(p∧q) and
B=((r∧q)∧p), we obtain:
∼(p∧q)∨((r∧q)∧p)
The arrow is now replaced by the familiar operators of NOT, AND, and OR. We have taken the first step toward clarity.
Phase 2
The Art of Rearrangement
Consider the second part of our expression: ((r∧q)∧p). Because the operator is exclusively AND, we are governed by the Associative and Commutative laws.
We can shuffle these variables to find patterns. By grouping
p and
q together, we rewrite the expression as:
∼(p∧q)∨(r∧(p∧q))
This rearrangement is the "Aha!" moment. We have successfully created a common structure.
Phase 3
The Power of Substitution
To reduce cognitive load, let us use a substitution. Let X=(p∧q).
The expression now transforms into:
∼X∨(r∧X)
It is no longer a terrifying string of symbols; it is a simple, elegant logical statement. We have moved from the forest of complexity into the clearing of simplicity.
Phase 4
The Distributive Dance
Next, we apply the Distributive Law. Distributing
∼X∨ over the bracket
(r∧X) yields:
(∼X∨r)∧(∼X∨X)
We have expanded the logic, creating two distinct branches connected by an AND operator.
Phase 5
The Tautology Reveal
Look closely at the second bracket: (∼X∨X). This is a Tautology.
Since a statement
X is either true or false,
X OR NOT
X must always be true, represented by
T. Our expression becomes:
(∼X∨r)∧T
Because anything AND True is simply the thing itself, the
T vanishes, leaving us with:
∼X∨r
Phase 6
The Final Synthesis
Now, we reverse our substitution by replacing
X with
(p∧q):
∼(p∧q)∨r
Applying the implication rule in reverse, we rewrite this as:
(p∧q)⇒r
We have successfully distilled the complexity into a concise, elegant implication. By testing the options, we find that the expression simplifies to the equivalent of (p∧q)⇒r.