Let be defined as . If is a function such that , , then (63) is equal to
- (A)✓ Correct
- (B)
- (C)
- (D)
Answer: (A)
Solution
Since , we have , so is strictly increasing and invertible. Thus . From , differentiating gives , so . To find , we need , i.e., solve : gives , so . Then , and .
JEE Main · 2022 · 25 Jun 2022 · Shift 1 · Single correct option