જો $y=2 \sin x+3 \cos x$ અને $y+A \frac{d^2 y}{d x^2}=B$ હોય,તો $A$ અને $B$ ની કિંમતો અનુક્રમે શું થશે?

  • A
    $0, 1$
  • B
    $0, -1$
  • C
    $-1, 0$
  • D
    $1, 0$

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

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

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

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