There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ -0.761xxx - 8.998xx + 2427.742x - 9446.59\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -0.761x^{3} - 8.998x^{2} + 2427.742x - 9446.59\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -0.761x^{3} - 8.998x^{2} + 2427.742x - 9446.59\right)}{dx}\\=&-0.761*3x^{2} - 8.998*2x + 2427.742 + 0\\=&-2.283x^{2} - 17.996x + 2427.742\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( -2.283x^{2} - 17.996x + 2427.742\right)}{dx}\\=&-2.283*2x - 17.996 + 0\\=&-4.566x - 17.996\\ \end{split}\end{equation} \]

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