There are 1 questions in this calculation: for each question, the 3 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ third\ derivative\ of\ function\ 2 - x\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = - x + 2\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( - x + 2\right)}{dx}\\=& - 1 + 0\\=& - 1\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( - 1\right)}{dx}\\=& - 0\\\\ &\color{blue}{The\ third\ derivative\ of\ function:} \\&\frac{d\left( - 0\right)}{dx}\\=& - 0\\ \end{split}\end{equation} \]

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