There are 1 questions in this calculation: for each question, the 3 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ third\ derivative\ of\ function\ -0.0749{x}^{3} + 0.5993{x}^{2} - 2.1684x + 7.256\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -0.0749x^{3} + 0.5993x^{2} - 2.1684x + 7.256\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -0.0749x^{3} + 0.5993x^{2} - 2.1684x + 7.256\right)}{dx}\\=&-0.0749*3x^{2} + 0.5993*2x - 2.1684 + 0\\=&-0.2247x^{2} + 1.1986x - 2.1684\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( -0.2247x^{2} + 1.1986x - 2.1684\right)}{dx}\\=&-0.2247*2x + 1.1986 + 0\\=&-0.4494x + 1.1986\\\\ &\color{blue}{The\ third\ derivative\ of\ function:} \\&\frac{d\left( -0.4494x + 1.1986\right)}{dx}\\=&-0.4494 + 0\\=&-0.4494\\ \end{split}\end{equation} \]

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