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

જો $y = a \cos (\ln x) + b \sin (\ln x)$ હોય,તો $x^2 \frac{d^2y}{dx^2} + x \frac{dy}{dx}$ ની કિંમત શોધો.

જો $f(x) = 10 \cos x + (13 + 2x) \sin x$ હોય, તો $f''(x) + f(x)$ ની કિંમત શોધો.

જો $y=f(\cosh x)$ અને $f^{\prime}(x)=\log \left(x+\sqrt{x^2-1}\right)$ હોય, તો $\frac{d^2 y}{d x^2}=$

જો $y=5 \cos x-3 \sin x$ હોય,તો સાબિત કરો કે $\frac{d^{2} y}{d x^{2}}+y=0.$

જો $y=x^{3}+\tan x$ હોય,તો $\frac{d^{2} y}{d x^{2}}$ શોધો.

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