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AP EAMCET · Maths · Differentiation

If \(y=\sin ^{-1} x\) then \(\left(1-x^2\right) y_2-x y_1=\)

  1. A 0
  2. B 1
  3. C 2
  4. D \(2 y\)
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(A) 0

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\begin{aligned} & \text { } y=\sin ^{-1} x \Rightarrow x=\sin y \Rightarrow \cos y \frac{d y}{d x}=1 \\ & \Rightarrow \frac{d y}{d x}=\sec y \Rightarrow \frac{d^2 y}{d x^2}=\sec y \tan y \frac{d y}{d x}=\frac{\sin y}{\cos ^2 y} \frac{d y}{d x} \\ & \Rightarrow\left(1-\sin ^2…