Let , and be a function such that for all . Then is equal to:
- (A)1
- (B)14✓ Correct
- (C)7
- (D)42
Answer: (B)
Solution
, . Since , is the inverse of . Solve : , so . Differentiating : , so . Therefore
JEE Main · 2024 · 05 Apr 2024 · Shift 1 · Single correct option