JEE Advanced · 2016 · 22 May 2016 · Paper 1 · Continuity and Differentiability

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Let and be differentiable functions such that , and for all . Then
  1. (A)
  2. (B)✓ Correct
  3. (C)✓ Correct
  4. (D)

Answer: (B), (C)

Solution

From , differentiating: .

At : , , so , giving .

(A) False (source says but working gives ).

From , we have (since is the inverse of ).

So .

(C) . True.

(B) . At : , , . So . True.

JEE Advanced · 2016 · 22 May 2016 · Paper 1 · One or more correct options

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