There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 16000 + 500x - 1.6{x}^{2} + 0.004{x}^{3}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 500x - 1.6x^{2} + 0.004x^{3} + 16000\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 500x - 1.6x^{2} + 0.004x^{3} + 16000\right)}{dx}\\=&500 - 1.6*2x + 0.004*3x^{2} + 0\\=& - 3.2x + 0.012x^{2} + 500\\ \end{split}\end{equation} \]

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