फलन $(\cos x)^{y}=(\cos y)^{x}$ के लिए $\frac{dy}{dx}$ ज्ञात कीजिए।

  • 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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यदि $y = [(x+1)(2x+1)(3x+1) \ldots (nx+1)]^n$ है,तो $x=0$ पर $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

$y = (\tan x)^{(\tan x)^{\tan x}}$ है,तो $x = \frac{\pi}{4}$ पर $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

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यदि $y(\cos x)^{\sin x}=(\sin x)^{\sin x}$ है, तो $x=\frac{\pi}{4}$ पर $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

यदि $y = x^{(x^x)}$ है,तो $\frac{dy}{dx} = $

यदि $f(\theta) = \cos \theta_1 \cdot \cos \theta_2 \cdot \cos \theta_3 \cdots \cos \theta_n$ है,तो $\tan \theta_1 + \tan \theta_2 + \tan \theta_3 + \cdots + \tan \theta_n =$

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