There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 36x{\frac{1}{(x + 4)}}^{2}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{36x}{(x + 4)^{2}}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{36x}{(x + 4)^{2}}\right)}{dx}\\=&36(\frac{-2(1 + 0)}{(x + 4)^{3}})x + \frac{36}{(x + 4)^{2}}\\=&\frac{-72x}{(x + 4)^{3}} + \frac{36}{(x + 4)^{2}}\\ \end{split}\end{equation} \]

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