Question
Find the second order derivatives of the function given in Exercise:
$\log\text{x}$

Answer

Let $\text{y}=\log\text{x}$
$\therefore\ \frac{\text{dy}}{\text{dx}}=\frac{1}{\text{x}}$
$\therefore\ \frac{\text{d}^2\text{y}}{\text{dx}^2}=-\frac{1}{\text{x}^2}$

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