Let be a function which is differentiable at all points of its domain and satisfies the condition , with . Then is equal to:
- (A)29
- (B)19
- (C)39✓ Correct
- (D)23
Answer: (C)
Solution
Starting from , rearrange to . Dividing both sides by :
The left side is exactly , since
So
Integrating:
Using : , so .
Then
The left side is exactly , since
So
Integrating:
Using : , so .
Then
JEE Main · 2025 · 24 Jan 2025 · Shift 2 · Single correct option