Let and is area of the region . If for a then equals:
- (A)
- (B)
- (C)✓ Correct
- (D)
Answer: (C)
Solution
The region under from to has width at each , so its area is . The ratio condition gives , so . Raising to the power , .
JEE Main · 2019 · 08 Apr 2019 · Shift 2 · Single correct option