There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ -0.0066{x}^{3} + 0.1619{x}^{2} - 1.2364x + 30.964\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -0.0066x^{3} + 0.1619x^{2} - 1.2364x + 30.964\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -0.0066x^{3} + 0.1619x^{2} - 1.2364x + 30.964\right)}{dx}\\=&-0.0066*3x^{2} + 0.1619*2x - 1.2364 + 0\\=&-0.0198x^{2} + 0.3238x - 1.2364\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( -0.0198x^{2} + 0.3238x - 1.2364\right)}{dx}\\=&-0.0198*2x + 0.3238 + 0\\=&-0.0396x + 0.3238\\ \end{split}\end{equation} \]

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