If the point on the curve, is farthest from the point then is equal to:
- (A)21
- (B)48
- (C)36✓ Correct
- (D)29
Answer: (C)
Solution
Write the curve as and take . Then , and using this reduces to . As a quadratic in on it increases throughout that range, so it is greatest at , giving .
JEE Main · 2020 · 05 Sep 2020 · Shift 1 · Single correct option