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

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