There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ x{e}^{15} - \frac{0.1x}{2}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = xe^{15} - 0.05x\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( xe^{15} - 0.05x\right)}{dx}\\=&e^{15} + x*15e^{14}*0 - 0.05\\=&e^{15} - 0.05\\ \end{split}\end{equation} \]

Your problem has not been solved here? Please take a look at the  hot problems ！