There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{-({x}^{9} + 2{x}^{3} - 9)}{3}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{-1}{3}x^{9} - \frac{2}{3}x^{3} + 3\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{-1}{3}x^{9} - \frac{2}{3}x^{3} + 3\right)}{dx}\\=&\frac{-1}{3}*9x^{8} - \frac{2}{3}*3x^{2} + 0\\=&-3x^{8} - 2x^{2}\\ \end{split}\end{equation} \]

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