यदि $\cos ^{-1}\left(\frac{y}{2}\right)=\log _{e}\left(\frac{x}{5}\right)^{5}$ और $|y| < 2$ है,तो निम्नलिखित में से कौन सा सत्य है?

  • A
    $x^{2} y^{\prime \prime}+x y^{\prime}+25 y=0$
  • B
    $x^{2} y^{\prime \prime}+x y^{\prime}-25 y=0$
  • C
    $x^{2} y^{\prime \prime}-x y^{\prime}+25 y=0$
  • D
    $x^{2} y^{\prime \prime}+x y^{\prime}+25 y=0$

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Similar Questions

फलन $y = e^{x} \sin 5x$ का द्वितीय कोटि का अवकलज ज्ञात कीजिए।

यदि $y=5 \cos x-3 \sin x$ है,तो सिद्ध कीजिए कि $\frac{d^{2} y}{d x^{2}}+y=0.$

यदि $a y^4 = (x + b)^5$ है,तो $\frac{y \cdot (\frac{d^2 y}{d x^2})}{(\frac{d y}{d x})^2} = $

माना $f(x) = x^{3} + x^{2}f^{\prime}(1) + 2x f^{\prime\prime}(2) + f^{\prime\prime\prime}(3)$, जहाँ $x \in R$ है। तो $f^{\prime}(5)$ का मान ज्ञात कीजिए:

$\frac{d^2}{dx^2}(2\cos x \cos 3x) = $

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