There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{-{(x - 2)}^{2}}{8} + \frac{9}{2}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{-1}{8}x^{2} + \frac{1}{2}x + 4\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{-1}{8}x^{2} + \frac{1}{2}x + 4\right)}{dx}\\=&\frac{-1}{8}*2x + \frac{1}{2} + 0\\=&\frac{-x}{4} + \frac{1}{2}\\ \end{split}\end{equation} \]

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