Sigma Percentile
JEE Main 2022 (26 July Shift 1)
LEVELJEE Main

Animated Solution for Mathematics - Sets and Relations: The statement is :

Select Answer:

Visualized Solution

Problem Analysis

  • Given statement:
  • Objective: Simplify the expression and compare with options.

Focusing on the Inner Expression

  • Consider the inner part:
  • Recall the negation identity:

Simplifying the Biconditional

  • Applying the identity:
  • Double negation gives:

Expanding the Biconditional

  • Substitute back:
  • Expand biconditional:

Applying Associative Law

  • Shift brackets using Associative Law:
  • This groups the terms together.

Simplifying the Inner Bracket

  • Convert implication:
  • Expression becomes:

Distributive Law in Action

  • Distribute inside the bracket:
  • is a contradiction (False).

Resolving the Contradiction

  • simplifies to .
  • The full expression is now:

Final Simplification of the Expression

  • Notice that means both and are True.
  • If both are True, is trivially True.
  • Thus, .

Evaluating Option D

  • Let's test Option (D):
  • Convert implication:

Distributing Option D

  • Distribute :
  • is a contradiction (False).

Conclusion and Key Takeaway

  • Both our main expression and Option D simplify to .
  • Correct Option: (D)

The Sigma Insight: Types of Sets and Set Operations

Solution Diagram

Analyzing the Logical Expression

We are tasked with simplifying the logical expression:
First, we address the inner expression . We utilize the identity for the negation of a biconditional, which states that is equivalent to .
Applying this identity, the term becomes . Since double negation is equivalent to affirmation, this simplifies to:

Simplifying the Master Equation

Substituting this back into our original expression, we obtain:
We expand the biconditional into its constituent implications:
Using the Associative Law, we regroup the terms to isolate the variables:

Applying Logical Identities

Focusing on the inner bracket , we apply the implication identity :
Distributing across the disjunction, we get:
Since is a contradiction (False), the expression simplifies to , which is simply:

Final Verification

Our full expression is now . If is true, then both and are true, which makes true as well. Thus, the intersection is simply .
To verify the result against the provided options, we test the expression :
This simplifies to , which is . Therefore, the expression is equivalent to .

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