यदि $\ln \left( {(e - 1){e^{xy}} + {x^2}} \right) = {x^2} + {y^2}$ है,तो $\left. {\frac{{dy}}{{dx}}} \right|_{(1,0)}$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $4$

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यदि $\cos ^{-1}\left(\frac{x^2-y^2}{x^2+y^2}\right)=\sin ^{-1}(a)$ है,तो $\frac{d y}{d x}$ का मान ज्ञात कीजिए।

यदि $\sec (\log _2 y^2) = \operatorname{cosec} (\log _2 x^2)$ है, तो $\frac{dy}{dx} =$

यदि $xy = \tan^{-1}(xy) + \cot^{-1}(xy)$ है,तो $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

यदि $\sqrt{\frac{y}{x}}+4 \sqrt{\frac{x}{y}}=4$ है, तो $\frac{d y}{d x}=$

यदि $f(x) = (\cos x)(\cos 2x) \ldots (\cos nx)$ है, तो $f^{\prime}(x) + \sum_{r=1}^n (r \tan rx) f(x)$ का मान ज्ञात कीजिए।

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