JEE Main · 2025 · 24 Jan 2025 · Shift 2 · Differential Equations

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Let be a function which is differentiable at all points of its domain and satisfies the condition , with . Then is equal to:
  1. (A)29
  2. (B)19
  3. (C)39✓ Correct
  4. (D)23

Answer: (C)

Solution

Starting from , rearrange to . Dividing both sides by :


The left side is exactly , since


So


Integrating:


Using : , so .

Then

JEE Main · 2025 · 24 Jan 2025 · Shift 2 · Single correct option

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