There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ -0.0054{x}^{3} + 0.1226{x}^{2} - 0.8774x + 20.213\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -0.0054x^{3} + 0.1226x^{2} - 0.8774x + 20.213\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -0.0054x^{3} + 0.1226x^{2} - 0.8774x + 20.213\right)}{dx}\\=&-0.0054*3x^{2} + 0.1226*2x - 0.8774 + 0\\=&-0.0162x^{2} + 0.2452x - 0.8774\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( -0.0162x^{2} + 0.2452x - 0.8774\right)}{dx}\\=&-0.0162*2x + 0.2452 + 0\\=&-0.0324x + 0.2452\\ \end{split}\end{equation} \]

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