There are 1 questions in this calculation: for each question, the 3 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ third\ derivative\ of\ function\ 5xxx - 6x + 7\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 5x^{3} - 6x + 7\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 5x^{3} - 6x + 7\right)}{dx}\\=&5*3x^{2} - 6 + 0\\=&15x^{2} - 6\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 15x^{2} - 6\right)}{dx}\\=&15*2x + 0\\=&30x\\\\ &\color{blue}{The\ third\ derivative\ of\ function:} \\&\frac{d\left( 30x\right)}{dx}\\=&30\\ \end{split}\end{equation} \]

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