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

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