જો $\cos ^{-1}\left(\frac{y}{b}\right)=2 \log \left(\frac{x}{2}\right)$,જ્યાં $x>0$,તો $x^2 \frac{d^2 y}{d x^2}+x \frac{d y}{d x}$ ની કિંમત શું થાય?

  • A
    $4 y$
  • B
    $-4 y$
  • C
    $0$
  • D
    $-8 y$

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Similar Questions

$\frac{d^2x}{dy^2} = $

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જો ${y^2} = p(x)$ એ ત્રણ ઘાતવાળી બહુપદી હોય,તો $2{d \over {dx}}\left\{ {{y^3}.{{{d^2}y} \over {d{x^2}}}} \right\} =$

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

જો વિધેય $y = \sin^{-1} x$ હોય,તો $\left(1-x^2\right) \frac{d^2 y}{d x^2}$ ની કિંમત કેટલી થાય?

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