There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 21.085{e}^{(-0.604x)}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 21.085{e}^{(-0.604x)}\right)}{dx}\\=&21.085({e}^{(-0.604x)}((-0.604)ln(e) + \frac{(-0.604x)(0)}{(e)}))\\=&-12.73534{e}^{(-0.604x)}\\ \end{split}\end{equation} \]

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