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

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