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$y = x^{- 2} l n x$ হলে $\frac{d^{2} y}{d x^{2}}$ এর মান কত? (If $y = x^{- 2} l n x,$ then what is the value of $\frac{d^{2} y}{d x^{2}} ?$ )

x^{- 4} \ln x - 2 x^{- 2} - 3 x^{- 4}

6 x^{- 4} \ln x - 5 x^{- 4}

6 x^{- 4} \ln x - 2 x^{- 2} - 3 x^{- 4}

x^{- 4} \ln x - 2 x^{- 2} + 3 x^{- 4}

ANS : 2

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