જો $a x^2+2 h x y+b y^2=0$ હોય, તો $\frac{d^2 y}{d x^2}=$

  • A
    $\frac{h^2-a b}{(h x+b y)^3}$
  • B
    $\frac{2(h^2-a b)}{(h x+b y)^3}$
  • C
    $\frac{(h x+b y)^3}{h^2-a b}$
  • D
    $0$

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