There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ 2{x}^{3} - 9{x}^{2} + 12x + 15\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 2x^{3} - 9x^{2} + 12x + 15\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 2x^{3} - 9x^{2} + 12x + 15\right)}{dx}\\=&2*3x^{2} - 9*2x + 12 + 0\\=&6x^{2} - 18x + 12\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 6x^{2} - 18x + 12\right)}{dx}\\=&6*2x - 18 + 0\\=&12x - 18\\ \end{split}\end{equation} \]

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