There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ (1 - 2{\frac{1}{e}}^{(x + π)})cos(x) - 3\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( cos(x) - 2{\frac{1}{e}}^{(x + π)}cos(x) - 3\right)}{dx}\\=&-sin(x) - 2({\frac{1}{e}}^{(x + π)}((1 + 0)ln(\frac{1}{e}) + \frac{(x + π)(\frac{-0}{e^{2}})}{(\frac{1}{e})}))cos(x) - 2{\frac{1}{e}}^{(x + π)}*-sin(x) + 0\\=&-sin(x) + 2{\frac{1}{e}}^{(x + π)}cos(x) + 2{\frac{1}{e}}^{(x + π)}sin(x)\\ \end{split}\end{equation} \]

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