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AP EAMCET202120 Aug 2021Morning ShiftMathematicsDifferentiationActual

d d x sin 2 c o t - 1 1 + x 1 - x =

Options

  1. A0
  2. B- 1 2
  3. C1 2
  4. D- 1

Correct answer

C. 1 2

Step-by-step solution

Let y = sin 2 cot - 1 1 + x 1 - x Put   x = cos 2 θ d x d θ = - 2 sin 2 θ 1 - cos 2 θ 1 + cos 2 θ = tan θ y = sin 2 cot - 1 tan θ y = sin 2 cot - 1 c o t π 2 - θ y = sin 2 π 2 - θ y = cos 2 θ d y d θ = 2 cos θ . - sin θ d y d x = d y d θ d x d θ = 1 2 d y d x = 1 2

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