Question:medium

If
\[ f(x) = \cos^{-1} \left[ \frac{1 - (\log x)^2}{1 + (\log x)^2} \right], \]
then the value of \(f'(e)\) is equal to

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Convert inverse trigonometric expressions using standard identities.
Updated On: Mar 23, 2026
  • 1
  • \(\dfrac{1}{e}\)
  • \(\dfrac{2}{e}\)
  • (2)/(e²)
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The Correct Option is B

Solution and Explanation

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