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MHT CET · Maths · Application of Derivatives

The equation of tangent to the curve \(\mathrm{y}=\cos (x+\mathrm{y})\) where \(-2 \pi \leq x \leq 2 \pi\) and which is parallel to the line \(x+2 \mathrm{y}=0\), is

  1. A \(2 x+4 y+\pi=0\)
  2. B \(2 x+4 y-\pi=0\)
  3. C \(2 x+4 y-3 \pi=0\)
  4. D \(2 x-4 y+3 \pi=0\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(2 x+4 y-\pi=0\)

Step-by-step Solution

Detailed explanation

Given curve: \(y = \cos(x+y)\) Differentiate implicitly with respect to \(x\):