There are 1 questions in this calculation: for each question, the 1 derivative of t is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 0.8(1 - e^{-0.47t}) + 2.1\ with\ respect\ to\ t：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = - 0.8e^{-0.47t} + 2.9\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( - 0.8e^{-0.47t} + 2.9\right)}{dt}\\=& - 0.8e^{-0.47t}*-0.47 + 0\\=& - -0.376e^{-0.47t}\\ \end{split}\end{equation} \]

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