જો $y = \cos^{2} \frac{3x}{2} - \sin^{2} \frac{3x}{2}$ હોય,તો $\frac{d^{2}y}{dx^{2}}$ શું થાય?

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

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જો ${y^2} = a{x^2} + bx + c$ હોય,તો ${y^3}\frac{{{d^2}y}}{{d{x^2}}}$ શું છે?

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જો $y = (\tan^{-1} 2x)^2 + (\cot^{-1} 2x)^2$ હોય,તો $(1 + 4x^2)^2 y'' - 16 =$

જો $y = x + e^x$ હોય,તો $\frac{d^2x}{dy^2}$ શું થાય?

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