There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ -{x}^{6} + {x}^{4}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -x^{6} + x^{4}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -x^{6} + x^{4}\right)}{dx}\\=&-6x^{5} + 4x^{3}\\=&-6x^{5} + 4x^{3}\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( -6x^{5} + 4x^{3}\right)}{dx}\\=&-6*5x^{4} + 4*3x^{2}\\=&-30x^{4} + 12x^{2}\\ \end{split}\end{equation} \]

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