There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 2.22399(-e^{-0.049}x + 1)*0.479 - e^{-0.049}x\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -1.06529121xe^{-0.049} - xe^{-0.049} + 1.06529121\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -1.06529121xe^{-0.049} - xe^{-0.049} + 1.06529121\right)}{dx}\\=&-1.06529121e^{-0.049} - 1.06529121xe^{-0.049}*0 - e^{-0.049} - xe^{-0.049}*0 + 0\\=&-1.06529121e^{-0.049} - e^{-0.049}\\ \end{split}\end{equation} \]

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