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

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