JEE Main · 2022 · 29 Jun 2022 · Shift 1 · Mathematical Reasoning *

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Let be such that is a tautology. Then is equal to :
  1. (A)
  2. (B)
  3. (C)⇒✓ Correct
  4. (D)⇔

Answer: (C)

Solution

First simplify :


Now test option (C):





This is a tautology, so

JEE Main · 2022 · 29 Jun 2022 · Shift 1 · Single correct option

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