જો $y=a \sin x+(5+2 x) \cos x$ હોય,તો $y^{\prime \prime}+y=$

  • A
    $4 \cos x$
  • B
    $-4 \cos x$
  • C
    $4 \sin x$
  • D
    $-4 \sin x$

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જો $x^{2} y^{5}=(x+y)^{7}$ હોય,તો $\frac{d^{2} y}{d x^{2}}$ ની કિંમત શોધો.

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

જો $y = (\sin^{-1} x)^2$ હોય, તો $(1 - x^2) \frac{d^2 y}{dx^2} - x \frac{dy}{dx} = $

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

જો $y = (\sin^{-1} 2x)^2 + (\cos^{-1} 2x)^2$ હોય, તો $(1 - 4x^2) y_2 - 4x y_1 = $

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