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MHT CET · Maths · Differentiation

If fx=cos-11-logx21+logx2, then f'e= ________

  1. A 1e
  2. B 2e2
  3. C 2e
  4. D 1
Verified Solution

Answer & Solution

Correct Answer

(A) 1e

Step-by-step Solution

Detailed explanation

Given fx=cos-11-logx21+logx2
fx=2tan-1logx
f'x=21+logx21x
f'(e)=+21+11e=1e
Note: lnx is better option in place of log x