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

Your problem has not been solved here? Please take a look at the  hot problems ！