જો $x^2+y^2=t+\frac{1}{t}$ અને $x^4+y^4=t^2+\frac{1}{t^2}$ હોય,તો $\frac{dy}{dx}=$

  • A
    $\frac{1}{x^3 y}$
  • B
    $\frac{1}{x y^3}$
  • C
    $-\frac{1}{x y^3}$
  • D
    $-\frac{1}{x^3 y}$

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જો $-1 < x < 1$ માટે $x \sqrt{1+y}+y \sqrt{1+x}=0$ હોય,તો સાબિત કરો કે $\frac{dy}{dx} = -\frac{1}{(1+x)^2}$.

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જો $y = \sqrt{\sin^{-1} x + y}$ હોય,તો $\frac{dy}{dx} = $ . . . . . . . (જ્યાં,$x \in (0, 1)$)

જો $\tan y = \frac{x \sin \alpha}{1-x \cos \alpha}$ અને $\frac{dy}{dx} = \frac{m}{x^2+2nx+1}$ હોય,તો $m^2+n^2$ ની કિંમત શોધો.

વક્ર $\sqrt{x} + \sqrt{y} = 1$ માટે,બિંદુ $\left( \frac{1}{4}, \frac{1}{4} \right)$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો:

જો ${x^y} = {e^{x - y}}$ હોય,તો $\frac{dy}{dx} = $

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