જો $x \cos (k+y)=\cos y$ હોય, તો $y=\frac{\pi}{2}$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો.

  • A
    $\sin k$
  • B
    $\cos k$
  • C
    $1$
  • D
    $0$

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જો $3 f(\cos x) + 2 f(\sin x) = 5 x$ હોય,તો $f^{\prime}(\cos x) + f^{\prime}(\sin x) =$

જો $y = x^2 + \frac{1}{x^2 + \frac{1}{x^2 + \frac{1}{x^2 + \dots \infty}}}$,હોય,તો $\frac{dy}{dx} = $

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જો $y = x^{x^{x^{\dots\infty}}}$,તો $\frac{dy}{dx} = $

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