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

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