There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ (s(0.5s + \frac{1}{(0.25s + 1)}))\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 0.5s^{2} + \frac{s}{(0.25s + 1)}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 0.5s^{2} + \frac{s}{(0.25s + 1)}\right)}{dx}\\=&0 + (\frac{-(0 + 0)}{(0.25s + 1)^{2}})s + 0\\=&0\\ \end{split}\end{equation} \]

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