There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ 0.0022{x}^{3} - 0.0385{x}^{2} + 0.2485x + 6.1636\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 0.0022x^{3} - 0.0385x^{2} + 0.2485x + 6.1636\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 0.0022x^{3} - 0.0385x^{2} + 0.2485x + 6.1636\right)}{dx}\\=&0.0022*3x^{2} - 0.0385*2x + 0.2485 + 0\\=&0.0066x^{2} - 0.077x + 0.2485\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 0.0066x^{2} - 0.077x + 0.2485\right)}{dx}\\=&0.0066*2x - 0.077 + 0\\=&0.0132x - 0.077\\ \end{split}\end{equation} \]

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