વિધેય $(\cos x)^{y}=(\cos y)^{x}$ માટે $\frac{dy}{dx}$ શોધો.

  • A
    $\frac{y \tan x + \log \cos y}{\log \cos x - x \tan y}$
  • B
    $\frac{y \tan x + \log \cos y}{x \tan y - \log \cos x}$
  • C
    $\frac{y \tan x + \log \cos y}{x \tan y + \log \cos x}$
  • D
    $\frac{y \tan x - \log \cos y}{x \tan y + \log \cos x}$

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