There are 1 questions in this calculation: for each question, the 7 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ 7th\ derivative\ of\ function\ k{x}^{8}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = kx^{8}\\\\ &\color{blue}{The\ 7th\ derivative\ of\ function:} \\=&40320kx\\ \end{split}\end{equation} \]

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