There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ \frac{ln(x)}{x}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{ln(x)}{x}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{ln(x)}{x}\right)}{dx}\\=&\frac{-ln(x)}{x^{2}} + \frac{1}{x(x)}\\=&\frac{-ln(x)}{x^{2}} + \frac{1}{x^{2}}\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( \frac{-ln(x)}{x^{2}} + \frac{1}{x^{2}}\right)}{dx}\\=&\frac{--2ln(x)}{x^{3}} - \frac{1}{x^{2}(x)} + \frac{-2}{x^{3}}\\=&\frac{2ln(x)}{x^{3}} - \frac{3}{x^{3}}\\ \end{split}\end{equation} \]

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