There are 1 questions in this calculation: for each question, the 1 derivative of q is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{(d(500 - 12q + \frac{3}{5}{q}^{2}))}{(d(q))}\ with\ respect\ to\ q：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{3}{5}q + \frac{500}{q} - 12\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{3}{5}q + \frac{500}{q} - 12\right)}{dq}\\=&\frac{3}{5} + \frac{500*-1}{q^{2}} + 0\\=&\frac{-500}{q^{2}} + \frac{3}{5}\\ \end{split}\end{equation} \]

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