There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ -0.254xxx + 6.609xx + 369.42x - 2503\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -0.254x^{3} + 6.609x^{2} + 369.42x - 2503\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -0.254x^{3} + 6.609x^{2} + 369.42x - 2503\right)}{dx}\\=&-0.254*3x^{2} + 6.609*2x + 369.42 + 0\\=&-0.762x^{2} + 13.218x + 369.42\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( -0.762x^{2} + 13.218x + 369.42\right)}{dx}\\=&-0.762*2x + 13.218 + 0\\=&-1.524x + 13.218\\ \end{split}\end{equation} \]

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