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

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