There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 54.229{e}^{(-0.4x - 7e)}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 54.229{e}^{(-0.4x - 7e)}\right)}{dx}\\=&54.229({e}^{(-0.4x - 7e)}((-0.4 - 7*0)ln(e) + \frac{(-0.4x - 7e)(0)}{(e)}))\\=&-21.6916{e}^{(-0.4x - 7e)}\\ \end{split}\end{equation} \]

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