There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{1}{10}x + \frac{1}{2}y + \frac{9}{10}z + 2a + 8b + 66c + 300d + 1000e\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{1}{10}x + \frac{1}{2}y + \frac{9}{10}z + 2a + 8b + 66c + 300d + 1000e\right)}{dx}\\=&\frac{1}{10} + 0 + 0 + 0 + 0 + 0 + 0 + 1000*0\\=&\frac{1}{10}\\ \end{split}\end{equation} \]

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