જો $y=3 e^{5 x}+5 e^{3 x}$ હોય,તો $\frac{d^{2} y}{d x^{2}}-8 \frac{d y}{d x}=$ ($y$ માં)

  • A
    $-10$
  • B
    $15$
  • C
    $-15$
  • D
    $10$

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ધારો કે $\cos ^{-1}\left(\frac{y}{b}\right)=\log \left(\frac{x}{n}\right)^{n}$. તો

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જો $\frac{d^2x}{dy^2} \left( \frac{dy}{dx} \right)^3 + \frac{d^2y}{dx^2} = K$ હોય,તો $K$ ની કિંમત કેટલી થાય?

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