यदि $t$ एक प्राचल (parameter) है और $x=t+\frac{1}{t}, y=t-\frac{1}{t}$ है, तो $\frac{d^2 y}{d x^2}=$

  • A
    $\frac{4 t}{\left(t^2-1\right)^2}$
  • B
    $\frac{t^2}{\left(t^2-1\right)}$
  • C
    $\frac{4 t^3}{\left(t^2-1\right)^3}$
  • D
    $\frac{-4 t^3}{\left(t^2-1\right)^3}$

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यदि $\tan x = \frac{2t}{1-t^2}$ और $\sin y = \frac{2t}{1+t^2}$ है,तो $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

यदि $x = a(\cos t + \log \tan \frac{t}{2})$ और $y = a \sin t$ है,तो $\frac{dy}{dx} = $

यदि $x = at^2$ और $y = 2at$ है, तो $\frac{d^2y}{dx^2} = \dots$

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

वक्र $x = t^2 + 3t - 8$,$y = 2t^2 - 2t - 5$ के बिंदु $(2, -1)$ पर स्पर्श रेखा की ढाल ज्ञात कीजिए।

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