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

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