Let be the solution of the differential equation , . If , then is :
- (A)
- (B)
- (C)
- (D)✓ Correct
Answer: (D)
Solution
The equation rearranges to a linear equation in :
With , , the integrating factor is
Multiplying through and integrating,
At , so , and forces . Hence
At , , so , giving
With , , the integrating factor is
Multiplying through and integrating,
At , so , and forces . Hence
At , , so , giving
JEE Main · 2025 · 29 Jan 2025 · Shift 1 · Single correct option