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

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