There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ 0.0006{x}^{3} + 0.0086{x}^{2} - 0.1086x + 6.9143\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 0.0006x^{3} + 0.0086x^{2} - 0.1086x + 6.9143\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 0.0006x^{3} + 0.0086x^{2} - 0.1086x + 6.9143\right)}{dx}\\=&0.0006*3x^{2} + 0.0086*2x - 0.1086 + 0\\=&0.0018x^{2} + 0.0172x - 0.1086\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 0.0018x^{2} + 0.0172x - 0.1086\right)}{dx}\\=&0.0018*2x + 0.0172 + 0\\=&0.0036x + 0.0172\\ \end{split}\end{equation} \]

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