There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 0.0005{x}^{4} - 0.0012{x}^{3} + 0.004{x}^{2} + 0.0394x\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 0.0005x^{4} - 0.0012x^{3} + 0.004x^{2} + 0.0394x\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 0.0005x^{4} - 0.0012x^{3} + 0.004x^{2} + 0.0394x\right)}{dx}\\=&0.0005*4x^{3} - 0.0012*3x^{2} + 0.004*2x + 0.0394\\ \end{split}\end{equation} \]

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