यदि $y = \cos^{2} \frac{3x}{2} - \sin^{2} \frac{3x}{2}$ है,तो $\frac{d^{2}y}{dx^{2}}$ क्या है?

  • A
    $-3 \sqrt{1-y^{2}}$
  • B
    $9y$
  • C
    $-9y$
  • D
    $3 \sqrt{1-y^{2}}$

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यदि $y = a{x^{n + 1}} + b{x^{ - n}}$ है,तो ${x^2}\frac{{{d^2}y}}{{d{x^2}}}$ का मान क्या होगा?

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यदि $y = (\sin^{-1} 2x)^2 + (\cos^{-1} 2x)^2$ है,तो $(1 - 4x^2) y_2 - 4x y_1 = $

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