If a curve passes through the point and satisfies the differential equation , then at , the value of cosy is:
- (A)
- (B)
- (C)✓ Correct
- (D)
Answer: (C)
Solution
Rearranged, the equation reads . With this becomes the linear equation , whose integrating factor is . Then , and integrating by parts twice gives . The point fixes . At , , so .
JEE Main · 2025 · 04 Apr 2025 · Shift 2 · Single correct option