There are 1 questions in this calculation: for each question, the 3 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ third\ derivative\ of\ function\ -0.2072{x}^{3} + 4.2318{x}^{2} - 23.986x + 31.487\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -0.2072x^{3} + 4.2318x^{2} - 23.986x + 31.487\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -0.2072x^{3} + 4.2318x^{2} - 23.986x + 31.487\right)}{dx}\\=&-0.2072*3x^{2} + 4.2318*2x - 23.986 + 0\\=&-0.6216x^{2} + 8.4636x - 23.986\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( -0.6216x^{2} + 8.4636x - 23.986\right)}{dx}\\=&-0.6216*2x + 8.4636 + 0\\=&-1.2432x + 8.4636\\\\ &\color{blue}{The\ third\ derivative\ of\ function:} \\&\frac{d\left( -1.2432x + 8.4636\right)}{dx}\\=&-1.2432 + 0\\=&-1.2432\\ \end{split}\end{equation} \]

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