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

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