यदि $y = \cos^{-1} \left\{ \frac{a \cos x - b \sin x}{\sqrt{a^2 + b^2}} \right\}$ है,तो $\frac{d^2 y}{d x^2}$ का मान ज्ञात कीजिए।

  • A
    $a - b$
  • B
    $a + b$
  • C
    $1$
  • D
    $0$

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यदि $f(x) = \frac{x^2}{x+a}$ है,तो $f^{\prime \prime}(a)$ का मान ज्ञात कीजिए।

यदि $y(\theta) = \frac{2 \cos \theta + \cos 2 \theta}{\cos 3 \theta + 4 \cos 2 \theta + 5 \cos \theta + 2}$ है,तो $\theta = \frac{\pi}{2}$ पर $y'' + y' + y$ का मान ज्ञात कीजिए।

यदि $y = a{e^{mx}} + b{e^{ - mx}}$ है,तो $\frac{d^2y}{dx^2} - m^2y = $

फलन $\tan^{-1} x$ का द्वितीय कोटि का अवकलज ज्ञात कीजिए।

$y = a \cos x + (b + 2x) \sin x \Rightarrow y^{\prime \prime} + y = $

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