There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 54.229{e}^{(-7e^{-0.4}x)}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 54.229{e}^{(-7xe^{-0.4})}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 54.229{e}^{(-7xe^{-0.4})}\right)}{dx}\\=&54.229({e}^{(-7xe^{-0.4})}((-7e^{-0.4} - 7xe^{-0.4}*0)ln(e) + \frac{(-7xe^{-0.4})(0)}{(e)}))\\=&-379.603{e}^{(-7xe^{-0.4})}e^{-0.4}\\ \end{split}\end{equation} \]

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