यदि $y = \frac{\cos 6x + 6\cos 4x + 15\cos 2x + 10}{\cos 5x + 5\cos 3x + 10\cos x}$ है,तो $\frac{dy}{dx} = $

  • A
    $2 \sin x + \cos x$
  • B
    $-2 \sin x$
  • C
    $\cos 2x$
  • D
    $\sin 2x$

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अवकलन ज्ञात कीजिए: $\frac{d}{dx} \left[ \frac{e^{ax}}{\sin(bx + c)} \right]$

मान लीजिए $g(x) \neq 0, g^{\prime}(x) \neq 0, f(x) \neq 0, f^{\prime}(x) \neq 0$. यदि $F(x)=f(x) g(x)$, $G(x)=f^{\prime}(x) g^{\prime}(x)$, $F^{\prime}(x)=G(x) H(x)$ और $F^{\prime}(x)=F(x) K(x)$ है, तो $H(x)+K(x)=$

यदि $2 f(x)-3 f\left(\frac{1}{x}\right)=x+1$ है,तो $f^{\prime}(\sqrt{3})$ का मान ज्ञात कीजिए।

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