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TS EAMCET · Maths · Differentiation

If \(\sec \left(\log _2 y^2\right)=\operatorname{cosec}\left(\log _2 x^2\right)\), then \(\frac{d y}{d x}=\)

  1. A \(\frac{x}{y}\)
  2. B \(\frac{y}{x}\)
  3. C \(-\frac{y}{x}\)
  4. D \(-\frac{x}{y}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(-\frac{y}{x}\)

Step-by-step Solution

Detailed explanation

\begin{aligned} & \sec \left(\log _2 y^2\right)=\operatorname{cosec}\left(\log _2 x^2\right) \\ & \Rightarrow \sec \left(2 \log _2 y\right)=\operatorname{cosec}\left(2 \log _2 x\right) \\ & \Rightarrow \sec ^2\left(2 \log _2 y\right)=\operatorname{cosec}^2\left(2 \log _2…

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