જો $\log _{10}\left(\frac{x^2-y^2}{x^2+y^2}\right)=2$ હોય,તો $\frac{dy}{dx} = \dots$

  • A
    $-\frac{99x}{101y}$
  • B
    $\frac{99x}{101y}$
  • C
    $-\frac{99y}{101x}$
  • D
    $\frac{99y}{101x}$

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ધારો કે $y = \frac{1}{1 + x + \ln x}$. તો,

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

જો $\sin y + e^{-x \cos y} = e$ હોય,તો $(1, \pi)$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો.

વિધેય $xy = e^{(x-y)}$ માટે $\frac{dy}{dx}$ શોધો.

જો $\log(\sqrt{1+x^2}-x) = y(\sqrt{1+x^2})$ હોય,તો $(1+x^2) \frac{dy}{dx} + xy =$

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