જો $e^{y} + xy = e$ હોય,તો $x = 0$ આગળ ક્રમયુક્ત જોડ $\left(\frac{dy}{dx}, \frac{d^2y}{dx^2}\right)$ ની કિંમત શોધો.

  • A
    $(-\frac{1}{e}, \frac{1}{e^2})$
  • B
    $(-1, 1)$
  • C
    $(1, -1)$
  • D
    $(1, 1)$

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

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જો $\cos ^{-1}\left(\frac{x^2-y^2}{x^2+y^2}\right)=\sin ^{-1}(a)$ હોય,તો $\frac{d y}{d x}$ ની કિંમત શોધો.

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