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
    $\frac{2}{x^3}$
  • B
    $\frac{2}{x^3y}$
  • C
    $\frac{1}{x^3}$
  • D
    $\frac{1}{x^3y}$

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જો $3 f(x)-2 f\left(\frac{1}{x}\right)=x$ હોય,તો $f^{\prime}(2)$ શું થાય?

જો $y = \sqrt{\cos x^2 + \sqrt{\cos x^2 + \sqrt{\cos x^2 + \dots \infty}}}$ અને $\frac{dy}{dx} = \frac{f(x)}{2y - 1}$ હોય, તો $\int f(x) dx = \dots$

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

જો $\sqrt{y + x} + \sqrt{y - x} = c$ હોય, તો $\frac{dy}{dx} = f(x) - \sqrt{[f(x)]^2 - 1}$ છે. $f(x)$ શોધો.

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