यदि $e^y + xy = e$ है,तो $x = 0$ पर क्रमित युग्म $\left(\frac{dy}{dx}, \frac{d^2y}{dx^2}\right)$ किसके बराबर है?

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

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यदि ${x^2} + {y^2} = t - \frac{1}{t}$ और ${x^4} + {y^4} = {t^2} + \frac{1}{t^2}$ है,तो ${x^3}y\frac{dy}{dx} = $

यदि $y = \sqrt{\cos x^2 + \sqrt{\cos x^2 + \sqrt{\cos x^2 + \dots \infty}}}$ और $\frac{dy}{dx} = \frac{f(x)}{2y - 1}$ है, तो $\int f(x) dx = \dots$

यदि $\sqrt{\frac{x}{y}} + \sqrt{\frac{y}{x}} = 6$ है, तो $\frac{dy}{dx} = $

यदि ${y^x} + {x^y} = {a^b}$ है,तो $\frac{dy}{dx} = $

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