There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ xx + X{x}^{6}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = x^{2} + Xx^{6}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( x^{2} + Xx^{6}\right)}{dx}\\=&2x + X*6x^{5}\\=&2x + 6Xx^{5}\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 2x + 6Xx^{5}\right)}{dx}\\=&2 + 6X*5x^{4}\\=&30Xx^{4} + 2\\ \end{split}\end{equation} \]

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